100
Participants
Start Date
March 5, 2020
Primary Completion Date
May 12, 2020
Study Completion Date
July 9, 2020
UC-MSCs
3 does of UC-MSCs(4.0\*10E7 cells per time) intravenously at Day 0, Day 3, Day 6.
Saline containing 1% Human serum albumin（solution without UC-MSCs）
3 does of placebo（intravenously at Day 0, Day 3, Day 6）
General Hospital of Central Theater Command, Wuhan
Maternal and Child Hospital of Hubei Province, Wuhan
Wuhan Huoshenshan Hospital, Wuhan
Huoshenshan Hospital
OTHER
Maternal and Child Health Hospital of Hubei Province
OTHER
The General Hospital of Central Theater Command
OTHER
Vcanbio Cell and Gene Engineering Corp., Ltd.
INDUSTRY
Beijing 302 Hospital
OTHER