10,000
Participants
Start Date
February 1, 2022
Primary Completion Date
February 1, 2023
Study Completion Date
February 10, 2023
no intervention
It's only observational study. No interventions.
RECRUITING
Qinghai Women and Children's Hospital, Xining
Lead Sponsor
Affiliated Hospital of Qinghai University
OTHER
Qinghai Red Cross Hospital
OTHER
Qinghai Women and Children's Hospital
UNKNOWN
Geermu People's Hospital
UNKNOWN
Yushu Prefecture People's Hospital
UNKNOWN
Guoluo Tibetan Autonomous Prefecture People's Hospital
UNKNOWN
Nanjing Medical University
OTHER