250
Participants
Start Date
December 31, 2012
Primary Completion Date
April 30, 2013
Study Completion Date
December 31, 2013
Vitamin D3
daily dosage of 50 µg Vitamin D3 for 8 weeks
Placebo
daily intake of placebo
German Federal Ministry of Education and Research
OTHER_GOV
Martin-Luther-Universität Halle-Wittenberg
OTHER