330
Participants
Start Date
October 31, 2012
Primary Completion Date
October 12, 2017
Study Completion Date
October 12, 2017
Vitamin D supplementation
The treatment group will receive an oral dose of 20,000 IU vitD weekly (equivalent to 2857 IU/day) as oily drops (Oleovit D3-drops; producer: Fresenius Kabi Austria GmbH, Linz)
Placebo
Medical University of Graz, Department of Internal Medicine, Division of Endocrinology and Metabolism, Graz
Austrian Science Fund (FWF)
OTHER
Medical University of Graz
OTHER