title: ABO blood-groups and venous thromboembolism.
mesh_terms: D000017:ABO Blood-Group System; D000367:Age Factors; D003276:Contraceptives, Oral / Q000009:adverse effects; D005260:Female; D006801:Humans; D008297:Male; D012737:Sex Factors; D013923:Thromboembolism / Q000453:epidemiology*; D006113:United Kingdom
chemical_list: D000017:ABO Blood-Group System; D003276:Contraceptives, Oral