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Trial registered on ANZCTR
Registration number
ACTRN12624001189516
Ethics application status
Approved
Date submitted
13/08/2024
Date registered
30/09/2024
Date last updated
30/09/2024
Date data sharing statement initially provided
30/09/2024
Type of registration
Prospectively registered
Titles & IDs
Public title
Assessing the efficacy of Resection and Plication (RAP) on oesophageal physiology and symptoms in patients with gastro-oesophageal reflux disease (GORD).
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Scientific title
Assessing changes in oesophageal physiology and reflux in patients with gastro-oesophageal reflux disease (GORD) after a novel, minimally invasive endoscopic anti-reflux procedure – RAP (Resection and Plication).
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Secondary ID [1]
312528
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Nil Known
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
gastro-oesophageal reflux disease (GORD)
334399
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Condition category
Condition code
Oral and Gastrointestinal
331040
331040
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0
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Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Intervention: Resection and Plication (RAP) Procedure. Provided by a trained Gastroenterologist at Sydney Gastroenterology and Liver, Sydney Adventist Hospital. The RAP procedure typically is performed under sedation using an endoscopic approach. Part of the gastric mucosa is resected and sutured to approximate the tissue to create a tighter valve between the stomach and oesophagus. Mucosa is resected using a special endoscopic needle and sutured using a endoscopic suturing device. This procedure may take anywhere from 45 minutes to 120 minutes depending on the patient’s anatomy. The patient will be admitted to the Sydney Adventist Hospital overnight for monitoring but in some limited cases you the patient be able to be discharged home on the same day. Patients will be followed up be phone call a few weeks later to check on progress including any potential side effects.
There is no monitoring of adherence as it is a one-off procedure. However, there will be follow up and assessment of efficacy as described in the 'Outcomes' sections.
Population: Patients with gastro-oesophageal reflux disease that have been referred to the Sydney Gastroenterology and Liver Group and deemed suitable for the Resection and Plication procedure.
Mode:
* The RAP procedure will be delivered once, face-to-face
* Follow-up will be provided via face-to-face, internet and/or telephone communication
* Follow-up will occur for up to 24 months as required.
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Intervention code [1]
329044
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Treatment: Surgery
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Comparator / control treatment
No control group
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Control group
Uncontrolled
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Outcomes
Primary outcome [1]
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Change in Acid Exposure Time (AET)
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Assessment method [1]
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pH/impedance study
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Timepoint [1]
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once baseline before RAP and once 3-6 months post-RAP.
There also may be further follow ups post-RAP as required, up to 24 months.
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Primary outcome [2]
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Change patients' reported reflux symptoms
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Assessment method [2]
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GERD-HRQL questionnaire
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Timepoint [2]
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once baseline pre-RAP and once 3-6 months post-RAP.
There also may be further follow ups post-RAP as required, up to 24 months.
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Secondary outcome [1]
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Change in total number of reflux episodes
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Assessment method [1]
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pH/impedance study
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Timepoint [1]
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once baseline before RAP and once 3-6 months post-RAP.
There also may be further follow ups post-RAP as required, up to 24 months.
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Secondary outcome [2]
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Change in Lower Oesophageal Sphincter pressure
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Assessment method [2]
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Oesophageal Manometry
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Timepoint [2]
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once baseline before RAP and once 3-6 months post-RAP.
There also may be further follow ups post-RAP as required, up to 24 months.
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Secondary outcome [3]
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Proton Pump Inhibitor use before and after treatment
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Assessment method [3]
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Patient Interview
Interview will be in format of clinical review to assess symptom progress including proton pump inhibitor use as well as any side effects. This will be performed by doctors, nurses or research assistants within the research team. Interview will be usually 15-30 minutes. Clinical notes will be taken during interview as well as any relevant questionnaires for the visit. Interviews will not be audi0-recorded.
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Timepoint [3]
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once baseline before RAP and once 3-6 months post-RAP.
There also may be further follow ups post-RAP as required, up to 24 months.
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Secondary outcome [4]
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change in patients' reflux symptoms
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Assessment method [4]
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Reflux symptom index (RSI)
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Timepoint [4]
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once baseline pre-RAP and once 3-6 months post-RAP
There may also be further follow ups post-RAP as required up to 24 months
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Secondary outcome [5]
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change in patients' reflux symptoms
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Assessment method [5]
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EHAS (Esophageal hypervigilance and anxiety scale)
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Timepoint [5]
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once baseline pre-RAP and once 3-6 months post-RAP
There may also be further follow ups post-RAP as required up to 24 months
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Secondary outcome [6]
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change in patients' reflux symptoms
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Assessment method [6]
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Rome integrative questionnaire for disorder of gut brain axis
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Timepoint [6]
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once baseline pre-RAP and once 3-6 months post-RAP
There may also be further follow ups post-RAP as required up to 24 months
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Eligibility
Key inclusion criteria
The main inclusion criterion is that the patient has been deemed appropriate clinically and willing to undergo RAP procedure. The patient must be able to provide informed consent for the procedure and be of 18 years or older.
Patients will have the following physiological and symptomatic characteristics on prior clinical assessments:
• Patients with significant reflux as demonstrated by prolonged acid exposure time (AET) of 6% or more on a pH reflux study.
• Patients with significant reflux symptoms (high symptom association probability, SAP) on a pH reflux study.
• If patients demonstrated borderline AET of 4-6% - high reflux episodes (more than 80) or high SAP
• Patients that are refractory to daily PPI therapy – AET 4% or more on a maximum tolerated acid lowering therapy.
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
• Patients who are not appropriate or eligible for RAP procedure
• Prior anti-reflux procedures, including fundoplication and endoscopic plication or TIF
• Prior gastric surgery, including weight reduction surgery
• Presence of oesophageal motility disorder (Eg. Achalasia) as measured by manometry
• Presence of a large hiatus hernia (greater than 2cm)
• Significant mental health issue or cognitive impairment affecting ability to provide informed consent
• Pregnant or breast feeding
• Significant coagulopathy or those who cannot safely interrupt the course of anticoagulation for few days for the RAP procedure.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Non-randomised trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Single group
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Other design features
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Phase
Not Applicable
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Type of endpoint/s
Efficacy
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Statistical methods / analysis
There is no pre-existing data to allow calculation of sample size from expected effect size. Whilst there is no set way to calculate appropriate number for pilot study, prior studies have used 10-35 participants. We will aim to recruit 10 patients based on expected number of patients who would be suitable for RAP procedure.
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
1/10/2024
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Actual
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Date of last participant enrolment
Anticipated
2/02/2026
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Actual
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Date of last data collection
Anticipated
2/02/2028
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Actual
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Sample size
Target
10
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
NSW
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Recruitment hospital [1]
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Sydney Adventist Hospital - Wahroonga
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Recruitment postcode(s) [1]
42864
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2076 - Wahroonga
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Funding & Sponsors
Funding source category [1]
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University
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Name [1]
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Australian National University - Advanced Health Care Limited research grant
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Address [1]
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Country [1]
316953
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Australia
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Primary sponsor type
Individual
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Name
Dr Calvin Park
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Address
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Country
Australia
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Secondary sponsor category [1]
319237
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None
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Name [1]
319237
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Address [1]
319237
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Country [1]
319237
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
315709
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Adventist HealthCare Ltd Human Research Ethics Committee
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Ethics committee address [1]
315709
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http://www.sah.org.au/ahcl-ethics-committee
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Ethics committee country [1]
315709
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Australia
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Date submitted for ethics approval [1]
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13/07/2024
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Approval date [1]
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27/08/2024
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Ethics approval number [1]
315709
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Summary
Brief summary
Resection and Plication (RAP) is a new endoscopic procedure that has been shown to improve reflux symptoms. This study aims to compare oesophageal physiology and reflux-related oesophageal acidification as well as symptoms before and after RAP. This work will help to strengthen current understanding of the efficacy of this procedure. Patients must be clinically appropriate and willing to undergo the Resection and Plication endoscopic procedure. Baseline testing (pH studies, manometry and questionnaires) will occur before RAP and 3-6 months post-RAP, to measure change in patient symptoms and physiology.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Dr Calvin Park
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Address
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Sydney Gastroenterology & Liver Group, Sydney Adventist Hospital Suite 213 'San Clinic Tulloch', 185 Fox Valley Road, Wahroonga, NSW, 2076
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Country
135558
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Australia
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Phone
135558
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+61 2 9480 6210
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Fax
135558
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Email
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[email protected]
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Contact person for public queries
Name
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Calvin Park
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Address
135559
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Sydney Gastroenterology & Liver Group, Sydney Adventist Hospital Suite 213 'San Clinic Tulloch', 185 Fox Valley Road, Wahroonga, NSW, 2076
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Country
135559
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Australia
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Phone
135559
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+61 2 9480 6210
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Fax
135559
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Email
135559
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[email protected]
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Contact person for scientific queries
Name
135560
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Calvin Park
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Address
135560
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Sydney Gastroenterology & Liver Group, Sydney Adventist Hospital Suite 213 'San Clinic Tulloch', 185 Fox Valley Road, Wahroonga, NSW, 2076
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Country
135560
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Australia
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Phone
135560
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+61 2 9480 6210
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Fax
135560
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Email
135560
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[email protected]
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Data sharing statement
Will individual participant data (IPD) for this trial be available (including data dictionaries)?
No
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No/undecided IPD sharing reason/comment
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What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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