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Trial registered on ANZCTR
Registration number
ACTRN12617000390381p
Ethics application status
Submitted, not yet approved
Date submitted
14/03/2017
Date registered
16/03/2017
Date last updated
16/03/2017
Type of registration
Prospectively registered
Titles & IDs
Public title
Virtual chromoendoscopy vs standard dye-based chromoendoscopy in Inflammatory Bowel Disease (IBD) surveillance.
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Scientific title
Virtual chromoendoscopy using i-scan Optical Enhancement for detection and assessment of dysplasia in patients with Inflammatory Bowel Disease - A prospective tandem colonoscopy study.
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Secondary ID [1]
291455
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None
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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:
Ulcerative colitis
302493
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Crohn's disease
302494
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Inflammatory Bowel Disease
302505
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Condition category
Condition code
Oral and Gastrointestinal
302051
302051
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0
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Inflammatory bowel disease
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Virtual chromoendoscopy using Pentax i-scan Optical Enhancement
- this is an imaging system used during colonoscopy to assess the bowel where the endoscopist pushes a button on the colonoscope that enhances the image on the screen, highlighting abnormal features in the bowel lining that may otherwise be missed
- the intervention will be administered by an experienced Gastroenterologist
- the intervention will be administered during colonoscopy
- it will be performed on a single occasion
- the anticipated duration is 10-20 minutes
- both the test intervention and the control intervention will be performed during the same colonoscopy procedure
- it will be performed in a specialist endoscopy unit
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Intervention code [1]
297505
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Early detection / Screening
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Intervention code [2]
297506
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Diagnosis / Prognosis
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Intervention code [3]
297507
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Treatment: Devices
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Comparator / control treatment
Dye-based chromoendoscopy
- this involves spraying the bowel wall with a dye during colonoscopy to help detect lesions
- this is the current "gold standard" intervention
- the intervention will be administered by an experienced Gastroenterologist
- the intervention will be administered during colonoscopy
- it will be performed on a single occasion
- the anticipated duration is 20-30 minutes
- both the test intervention and the control intervention will be performed during the same colonoscopy procedure
- it will be performed in a specialist endoscopy unit
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Control group
Active
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Outcomes
Primary outcome [1]
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Detection of colonic dysplasia
- % rate of dysplasia detection
- % rate of missed dysplastic lesions from virtual chromoendoscopy that were subsequently picked up on dye-based chromoendoscopy
These outcomes will be measured based on the histopathology reports of removed tissue
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Assessment method [1]
301472
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Timepoint [1]
301472
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On day 0 (at the time of colonoscopy)
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Secondary outcome [1]
332787
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Mean procedure duration
- this will be measured in minutes
- it will look separately at time for colonoscope insertion and time for colonoscope withdrawal
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Assessment method [1]
332787
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Timepoint [1]
332787
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On Day 0 (at time of colonoscopy)
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Eligibility
Key inclusion criteria
Inflammatory bowel disease
- ulcerative colitis of duration greater than 8 years where there is disease extension beyond the splenic flexure
- Crohn's colitis of duration > 8 years
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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
Children (age < 18)
Pregnant women
Those deemed medically unfit to safely undergo a colonoscopy
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Study design
Purpose of the study
Diagnosis
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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
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Who is / are masked / blinded?
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Intervention assignment
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Other design features
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Phase
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Not yet recruiting
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Date of first participant enrolment
Anticipated
17/04/2017
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Actual
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Date of last participant enrolment
Anticipated
13/04/2018
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Actual
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Date of last data collection
Anticipated
23/04/2018
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Actual
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Sample size
Target
200
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
NSW,QLD
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Recruitment hospital [1]
7679
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Gold Coast University Hospital - Southport
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Recruitment hospital [2]
7680
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Concord Repatriation Hospital - Concord
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Recruitment postcode(s) [1]
15597
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4215 - Southport
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Recruitment postcode(s) [2]
15598
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2139 - Concord
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Funding & Sponsors
Funding source category [1]
295925
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Hospital
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Name [1]
295925
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Gold Coast University Hospital
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Address [1]
295925
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1 Hospital Boulevard
Southport QLD 4215
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Country [1]
295925
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Australia
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Funding source category [2]
295926
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Hospital
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Name [2]
295926
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Concord Repatriation General Hospital
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Address [2]
295926
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Hospital Road
Concord NSW 2139
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Country [2]
295926
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Australia
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Primary sponsor type
Individual
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Name
Dr Alexander Dorrington
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Address
Department of Gastroenterology
Gold Coast University Hospital
1 Hospital Boulevard
Southport QLD 4215
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Country
Australia
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Secondary sponsor category [1]
294797
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Individual
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Name [1]
294797
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Dr Sneha John
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Address [1]
294797
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Department of Gastroenterology
Gold Coast University Hospital
1 Hospital Boulevard
Southport QLD 4215
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Country [1]
294797
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Australia
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Secondary sponsor category [2]
294798
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Individual
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Name [2]
294798
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Professor Rupert Leong
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Address [2]
294798
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Concord Repatriation General Hospital
Hospital Road
Concord NSW 2139
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Country [2]
294798
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Australia
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Secondary sponsor category [3]
294799
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Individual
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Name [3]
294799
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Dr John Edwards
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Address [3]
294799
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Department of Gastroenterology
Gold Coast University Hospital
1 Hospital Boulevard
Southport QLD 4215
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Country [3]
294799
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Australia
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Secondary sponsor category [4]
294800
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Individual
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Name [4]
294800
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Dr Aravind Gokul Tamilarasan
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Address [4]
294800
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Concord Repatriation General Hospital
Hospital Road
Concord NSW 2139
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Country [4]
294800
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Australia
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Ethics approval
Ethics application status
Submitted, not yet approved
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Ethics committee name [1]
297203
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Gold Coast Hospital and Health Service HREC
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Ethics committee address [1]
297203
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Gold Coast University Hospital 1 Hospital Blvd Southport QLD 4215
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Ethics committee country [1]
297203
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Australia
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Date submitted for ethics approval [1]
297203
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15/03/2017
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Approval date [1]
297203
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Ethics approval number [1]
297203
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Summary
Brief summary
Dysplasia is an important precursor to bowel cancer in IBD, which can be very challenging to detect. Previous studies suggest that dysplasia is detected in approximately 9% of colonoscopies performed for IBD surveillance. Dye-based chromoendoscopy (DBC) which involves spraying the entire colon with contrast materia such as indigo carmine or methylene blue is thought of as the current gold standard for dysplasia detection. However, dye-based chromoendoscopy is expensive, time consuming and difficult to perform, which limits its use as a surveillance test. A routine survey of Australian Gastroenetrologists suggests that more than half did not use the dye-spray technique. Virtual chromoendoscopy with Pentax i-scan Optical Enhancement(OE) uses in-built technology in the endoscope processor with the same principles as dye-based chromoendoscopy to enhance colonic mucosal pit and vessel pattern. We therefore hypothesise that virtual chromoendoscopy is non-inferior to dye spray chromoendoscopy in detecting dysplasia. It will also consume less resources and time. The aim of our study is to compare virtual and dye-based chromoendoscopy in a prospective tandem colonoscopy study. Research design & methods: We plan to conduct a prospective study, enrolling patients with known IBD who are due to have their standard surveillance colonoscopy to look for dysplasia. A tandem colonoscopy model will be used. Enrolled participants will have a colonoscopy using virtual chromoendoscopy with i-scan OE first during insertion and withdrawal. All lesions detected will be removed or biopsied, as appropriate. On completion of withdrawal, a second look will be performed with dye-spraying as is the current clinical practice. This will allow any additional pathology detected to be treated.
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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
73330
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Dr Alexander Dorrington
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Address
73330
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Department of Gastroenterology
Gold Coast University Hospital
1 Hospital Boulevard
Southport QLD 4215
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Country
73330
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Australia
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Phone
73330
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+61756875616
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Fax
73330
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Email
73330
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[email protected]
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Contact person for public queries
Name
73331
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Alexander Dorrington
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Address
73331
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Department of Gastroenterology
Gold Coast University Hospital
1 Hospital Boulevard
Southport QLD 4215
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Country
73331
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Australia
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Phone
73331
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+61756875616
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Fax
73331
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Email
73331
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[email protected]
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Contact person for scientific queries
Name
73332
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Alexander Dorrington
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Address
73332
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Department of Gastroenterology
Gold Coast University Hospital
1 Hospital Boulevard
Southport QLD 4215
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Country
73332
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Australia
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Phone
73332
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+61756875616
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Fax
73332
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Email
73332
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[email protected]
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No information has been provided regarding IPD availability
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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