540
Participants
Start Date
November 1, 2022
Primary Completion Date
December 31, 2025
Study Completion Date
December 31, 2026
Prednisone and Aspirin
prednisone 10 mg and aspirin 75-100mg per day per os
Placebo
placebo 2 starch tablets per day per os
Ningbo Women & Children's Hospital
OTHER
Jinhua People's Hospital
OTHER
Jiaxing Maternity and Child Health Care Hospital
OTHER
Second Affiliated Hospital, School of Medicine, Zhejiang University
OTHER