120
Participants
Start Date
July 1, 2025
Primary Completion Date
August 31, 2027
Study Completion Date
August 31, 2028
hUC-MSC-sEV-001 nasal drops
hUC-MSC-sEV-001 nasal drops
Xuanwu Hospital, Capital Medical University, Beijing
Xuanwu Hospital, Beijing
OTHER