60
Participants
Start Date
September 30, 2017
Primary Completion Date
May 28, 2021
Study Completion Date
July 30, 2021
Cholecalciferol (2000iu qd)
Patients will receive oral Cholecalciferol (2000IU qd) apart from routine therapy for PD
Routine therapy for PD
Patients randomized to the placebo group will receive routine therapy for PD.
Peking University First Hospital, Beijing
Peking University First Hospital
OTHER