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Trial registered on ANZCTR
Registration number
ACTRN12606000475549
Ethics application status
Approved
Date submitted
14/11/2006
Date registered
15/11/2006
Date last updated
15/11/2006
Type of registration
Prospectively registered
Titles & IDs
Public title
High Protein Diets, Weight Loss and Diabetes Study 2007
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Scientific title
A 12 week randomised parallel trial comparing 2 different high protein weight loss diets on blood cholesterol levels, blood sugar control and on kidney and cognitive function in Type 2 Diabetes and Obesity
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Secondary ID [1]
317
0
Commonwealth Scientific Industrial Research Organisation (CSIRO): AD51A
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Universal Trial Number (UTN)
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Trial acronym
DACCK
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Type 2 Diabetes
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Obesity
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Condition category
Condition code
Metabolic and Endocrine
1545
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0
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Diabetes
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Diet and Nutrition
1546
1546
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0
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Obesity
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
12 week dietary intervention of daily high protein 31%/high dietary cholesterol 650mg/Fat 29%/Carbohydrate 37% diet for 3 meals per day. Both diets are energy restricted to achieve weight loss.
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Intervention code [1]
1447
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Lifestyle
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Comparator / control treatment
12 week dietary intervention of daily high protein 34% /low dietary cholesterol 230mg/fat 26%/Carbohydrate 37% diet for 3 meals per day.
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Control group
Active
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Outcomes
Primary outcome [1]
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1. Low Density Lipoprotein (LDL), High Density Lipoprotein (HDL) Total Cholesterol and triglycerides
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Assessment method [1]
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Timepoint [1]
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At week 0 and week 12
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Primary outcome [2]
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2. Fasting ApoB
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Assessment method [2]
2135
0
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Timepoint [2]
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At week 0 and week 12
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Primary outcome [3]
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3. Glucose tolerance test (GTT) (0, 2hours)
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Assessment method [3]
2136
0
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Timepoint [3]
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At week 0 and week 12
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Primary outcome [4]
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4. Post prandial glucose using CGMS (36hr)
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Assessment method [4]
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Timepoint [4]
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At week 0 and week 12
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Primary outcome [5]
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5. HbA1C
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Assessment method [5]
2138
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Timepoint [5]
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At week 0 and week 12
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Secondary outcome [1]
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1. Plasma folate, homocysteine
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Assessment method [1]
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Timepoint [1]
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at week 0 and 12
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Secondary outcome [2]
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2. Cognitive function
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Assessment method [2]
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Timepoint [2]
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at week 0 and 12
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Secondary outcome [3]
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3. Satiety profiles
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Assessment method [3]
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Timepoint [3]
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assessed over a 12 hour period at week 0 and 12
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Secondary outcome [4]
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4. Weight loss (including lean and fat loss as assessed by bioelectrical impedance)
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Assessment method [4]
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Timepoint [4]
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at week 0 and 12
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Secondary outcome [5]
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5. Renal function (urinary urea, plasma creatinine and microalbuminuria)
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Assessment method [5]
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0
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Timepoint [5]
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at week 0 and 12
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Secondary outcome [6]
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6. Plasma lutein zeaxanthein and other carotenoids
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Assessment method [6]
3703
0
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Timepoint [6]
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at week 0 and 12
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Secondary outcome [7]
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7. Nutrient intakes before and during weight loss
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Assessment method [7]
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Timepoint [7]
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at week 0 and 12
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Eligibility
Key inclusion criteria
Body Mass Index (BMI) 25-40kg/m2 (this will be calculated for you)• Previously diagnosed Type 2 diabetes as noted on medical questionnaire or as assessed by a fasting blood glucose at screening (>6.1mmol/L).• HbA1C<9% (measured at screening)• Participants must understand the procedures involved and agree to participate in the study by giving full informed, written consent.• No abnormality of clinical significance on medical history (i.e. life-threatening cancer, liver or metabolic disease or cardiovascular problems - unstable angina, previous incidence of myocardial infarction, stroke or heart irregularity).• Not have type 1 diabetes (self reported)• Be available for the duration of the study (12 weeks).
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Minimum age
20
Years
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Maximum age
75
Years
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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
Consumption of any over-the-counter medication or food (and unwilling to cease) that in the opinion of the investigator could interfere with the study (eg Policosanol, Metamucil, plant sterol margarines, psyllium).• The following items if taken need to be kept stable during the study: corticosteroids, diuretics, B-blockers, fish oil supplements, cholesterol lowering agents• History of heavy alcohol consumption (> 5 STD drinks/day)• Allergy to eggs• Type 2 diabetes controlled with insulin• Extended absences due to travel or other commitments• Person considered by the investigator to be unwilling, unlikely or unable to comprehend or comply with the study protocol and restrictions.
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Allocation was concealed when it was done by central randomisation by computer.
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
random allocation using computer software clinstat
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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
Parallel
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Other design features
n/a
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Phase
Phase 4
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Type of endpoint/s
Efficacy
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Statistical methods / analysis
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Recruitment
Recruitment status
Recruiting
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Date of first participant enrolment
Anticipated
12/02/2007
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Actual
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
80
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
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Funding & Sponsors
Funding source category [1]
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Government body
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Name [1]
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Australian Egg Corporation Limited
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Address [1]
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Country [1]
1687
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Australia
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Funding source category [2]
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Government body
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Name [2]
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Commonwealth Scientific Research and Industrial Research Organisation
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Address [2]
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Country [2]
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Australia
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Primary sponsor type
Government body
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Name
Commonwealth Scientific Research and Industraial Organisation
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Address
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Country
Australia
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Secondary sponsor category [1]
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None
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Name [1]
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n/a
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Address [1]
1489
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Country [1]
1489
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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CSIRO Human Nutrition
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Ethics committee address [1]
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Ethics committee country [1]
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Australia
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Date submitted for ethics approval [1]
3137
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Approval date [1]
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22/09/2006
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Ethics approval number [1]
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05/11
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Summary
Brief summary
We propose to conduct a randomised controlled trial to compare the effect of eggs to a similar amount of protein and kilojoules from meat fish and chicken in the context of a high protein energy restricted dietary pattern. Primary outcome variables are LDL cholesterol and other cardiovascular risk factors. Our hypothesis is that daily consumption of 400mg dietary cholesterol as 2 eggs compared to an equivalent protein source low in saturated fat and low in cholesterol a kilojoule restricted diet will not adversely affect these outcomes We also propose to opportunistically compare the impact of these dietary patterns on post prandial glucose metabolism, cognitive function and satiety.
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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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Address
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Anne McGuffin
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Address
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CSIRO Human Nutrition
PO Box 10041
Adelaide BC SA 5000
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Country
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Australia
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Phone
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+61 8 83038988
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Fax
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+ 61 8 83038899
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Email
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[email protected]
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Contact person for scientific queries
Name
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Dr Manny Noakes
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Address
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CSIRO Human Nutrition
PO Box 10041
Adelaide BC SA 5000
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Country
1564
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Australia
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Phone
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+ 61 8 83038827
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Fax
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+ 61 8 83038899
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Email
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manny.noakes @csiro.au
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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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