Hameed 2021.

Study characteristics
Methods	Retrospective case series from multicenter multinational study ‐ 10 tertiary care centers in Pakistan, Egypt, Singapore, and US
Participants	Patients aged 18 years or above with recent COVID‐19 infection, confirmed either by reverse transcriptase‐polymerase chain reaction assay of a nasopharyngeal swab or serum antibody testing for COVID‐19, were included. Individuals on anticoagulation or with recent trauma were excluded
Interventions	Oral contraceptive
Outcomes	Cerebral venous thrombosis (venous thromboembolism)
Notes