1
Participants
Start Date
October 1, 2019
Primary Completion Date
December 31, 2019
Study Completion Date
December 31, 2020
No intervention
No intervention
Daping Hospital and the Research Institute of Surgery of the Third Military Medical University, Chongqing
Children's Hospital of Chongqing Medical University
OTHER
Daping Hospital and the Research Institute of Surgery of the Third Military Medical University
OTHER