500
Participants
Start Date
July 31, 2013
Primary Completion Date
December 31, 2016
Study Completion Date
December 31, 2016
Serum levels of 1a, 25-Dihydroxyvitamin D3 were measured by an enzyme-linked immuno-absorbent assay
Tianjin Medical University Eye Hospital, Tianjin
Lv Yingjuan
OTHER