200
Participants
Start Date
January 1, 2017
Primary Completion Date
January 1, 2018
Study Completion Date
December 30, 2030
observation
RECRUITING
Beijing Children's hospital, Beijing
Capital Institute of Pediatrics, China
OTHER
Shengjing Hospital
OTHER
Xinhua Hospital, Shanghai Jiao Tong University School of Medicine
OTHER
The Children's Hospital of Zhejiang University School of Medicine
OTHER
Children's Hospital of Chongqing Medical University
OTHER
The first clinical college of Guangzhou medical university
UNKNOWN
Guangzhou Women and Children's Medical Center
OTHER
Yuying Children's Hospital of Wenzhou Medical University
OTHER
Kunling Shen
OTHER