60
Participants
Start Date
July 20, 2024
Primary Completion Date
November 20, 2025
Study Completion Date
February 20, 2027
umbilical cord mesenchymal stem cell
umbilical cord mesenchymal stem cell
Placebo
non-cell-containing placebo
Zhongda Hospital
OTHER
Yinguan Biologics, Shenzheng
UNKNOWN
Southeast University, China
OTHER