Answering questions on when to use pills.
D000569:Americas; D003267:Contraception; D003276:Contraceptives, Oral; D019049:Developed Countries; D004194:Disease; D005193:Family Planning Services; D006973:Hypertension; D008881:Migraine Disorders; D009656:North America; D014481:United States; D014652:Vascular Diseases; D014930:Women
D003276:Contraceptives, Oral
Americas; Contraception; Contraceptive Methods--administraction and dosage; Developed Countries; Diseases; Family Planning; Hypertension--women; Migraine--women; North America; Northern America; Oral Contraceptives--administraction and dosage; Research Report; United States; Vascular Diseases; Women