1,000
Participants
Start Date
January 1, 2018
Primary Completion Date
June 30, 2019
Study Completion Date
June 30, 2019
no intervention
no intervention was given
Department of Pediatrics, Daping Hospital, Third Military Medical University, Chongqing
Daping Hospital and the Research Institute of Surgery of the Third Military Medical University, Chongqing
Collaborators (1)
Daping Hospital of Army Medical University
OTHER
Jiulongpo No.1 People's Hospital
OTHER
Children's Hospital of Chongqing Medical University
OTHER
Lanzhou General Hospital of PLA
OTHER
First Affiliated Hospital of Chongqing Medical University
OTHER
Southwest Hospital, China
OTHER
Guiyang Maternal and Child Health Care Hospital
OTHER
Chengdu Women and Children's Center Hospital
OTHER
The Second Affiliated Hospital of the Army Medical University
UNKNOWN
Zhujiang Hospital
OTHER
People's Liberation Army No.202 Hospital
OTHER
Bethune International Peace Hospital
OTHER
The 251st hosptital of PLA
UNKNOWN
People's Hospital of Xinjiang Uygur Autonomous Region
OTHER
The Second Military Medical University Changhai Hospital
UNKNOWN
The PLA Rocket Force general hospital
UNKNOWN
the 252th Hospital of PLA
UNKNOWN
Hunan Children's Hospital
OTHER_GOV
Wuhan general hospital of PLA
UNKNOWN
Jinan general hospital of PLA
UNKNOWN
The 306 Hospital of People's Liberation Army
OTHER
The 452nd hospital of PLA
UNKNOWN
Xijing Hospital，FMMU
UNKNOWN
307 Hospital of PLA
OTHER
The 88th Hospital of PLA
UNKNOWN
Tianjin Central Hospital of Gynecology Obstetrics
OTHER
Beijing 302 Hospital
OTHER
First Affiliated Hospital of Xinjiang Medical University
OTHER
Nanfang Hospital, Southern Medical University
OTHER
Children's Hospital of Fudan University
OTHER
Shanxi Provincial Maternity and Children's Hospital
OTHER
the PLA General Hospital
UNKNOWN
The 155th hosptital of PLA
UNKNOWN
General Hospital of Xinjiang Military Area
UNKNOWN
Guangzhou general hospital of PLA
UNKNOWN
The 211st hospital of PLA
UNKNOWN
First Affiliated Hospital of Harbin Medical University
OTHER
Maternal and Children's Healthcare Hospital of Taian
OTHER
Zhengzhou Children's Hospital, China
OTHER
Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region
OTHER
Shenyang General Hospital of PLA
UNKNOWN
The First Affiliated Hospital of Anhui Medical University
OTHER
Yan'an Affiliated Hospital of Kunming Medical University
OTHER
Inner Mongolia People's Hospital
OTHER
Women and Children's Hospital, Branch of Chongqing Sanxia Central Hospital
OTHER
Children's Hospital of Nanjing Medical University
OTHER
The First Hospital of Jilin University
OTHER
Shanghai Children's Medical Center
OTHER
Ningbo Women & Children's Hospital
OTHER
Shandong Maternal and Child Health Hospital
UNKNOWN
Guilin Medical College
OTHER
Women and Children Hospital of Qinghai Province
OTHER
Quanzhou Children's Hospital
OTHER
Newborn Department of Ankang City Central Hospital of Shaanxi Province
UNKNOWN
the Second Hospital of Xian Jiao Tong University
UNKNOWN
The Second Hospital of Shandong University
OTHER
Hunan Maternal and Children Health Hospital
UNKNOWN
The First People's Hospital of Yinchuan
OTHER
The First Affiliated Hospital of Zhengzhou University
OTHER
The People's Hospital of Dehong Autonomous Prefecture
OTHER
First people Hospital of Kashi
UNKNOWN
General Hospital of Tibet Military Region
UNKNOWN
Navy General Hospital, Beijing
OTHER
Second Affiliated Hospital of Guangzhou Medical University
OTHER
Jiangxi Province Children's Hospital
OTHER
the Maternal and Child Health Hospital of Hainan Province
OTHER
Zhang Ye Pepole Hospital of HeXi University
UNKNOWN
Shaanxi Provincial People's Hospital
OTHER
Hospital (T.C.M）Affiliated to Southwest Medical University
UNKNOWN
Tongji Medical College,Huazhong University of Science &Techonlogy
UNKNOWN
South Paris University Hospitals
UNKNOWN
Daping Hospital and the Research Institute of Surgery of the Third Military Medical University
OTHER