1,000
Participants
Start Date
December 7, 2016
Primary Completion Date
January 19, 2019
Study Completion Date
March 30, 2019
Aspirin
Low dose aspirin(100mg)per day starting between 12+ and 20 weeks of pregnancy until 34 weeks of pregnancy,taking at night.
Blank
Routine examination during pregnancy.
Peking University First Hospital, Beijing
Peking University First Hospital
OTHER