60
Participants
Start Date
May 1, 2021
Primary Completion Date
May 15, 2022
Study Completion Date
December 1, 2022
Vitamin D 2
Randomized allocation first arm : add on vitamin D supplementation 40,000 iu/week for 12 weeks
Placebo
Second arm : add on placebo for 12 weeks
Rajavithi hospital, Bangkok
Department of Medical Services Ministry of Public Health of Thailand
OTHER_GOV