{"identifier":"nobleid:/w1/20260521/5AFAC7EB","arkIdentifier":"ark:/48914/w1/20260521/5AFAC7EB","version":1,"workTitle":"British Pill Studies Stress Importance of Relation Between Progestogen Content and Vascular Disease","workType":"Journal Article","authors":"Unknown","description":null,"workUrl":null,"existingDoi":"10.2307/2947922","createdAt":"2026-05-21T16:41:27.521607Z","canonicalUrl":"https://nobleid.org/ark:/48914/w1/20260521/5AFAC7EB.v1"}