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D000367:Age Factors; D001519:Behavior; D001695:Biology; D001769:Blood; D001777:Blood Coagulation; D002319:Cardiovascular System; D003150:Community Health Workers; D003267:Contraception; D003276:Contraceptives, Oral; D003695:Delivery of Health Care; D003710:Demography; D004739:England; D005193:Family Planning Services; D006262:Health; D006282:Health Personnel; D010820:Physicians; D010827:Physiology; D011153:Population; D011154:Population Characteristics; D012907:Smoking; D014930:Women
D003276:Contraceptives, Oral
Age Factors; Behavior; Biology; Blood Coagulation Effects; Cardiovascular Effects; Contraception; Contraceptive Methods--contraindications; Contraceptive Methods--indications; Delivery Of Health Care; Demographic Factors; England; Family Planning; Family Planning Personnel; Health; Health Personnel; Hematological Effects; Hemic System; Oral Contraceptives--contraindications; Oral Contraceptives--indications; Physicians; Physiology; Population; Population Characteristics; Smoking; Women