Preparing for new male contraceptives.
D000569:Americas; D003267:Contraception; D003268:Contraception Behavior; D003710:Demography; D019049:Developed Countries; D005193:Family Planning Services; D005298:Fertility; D008571:Men; D009656:North America; D011153:Population; D011157:Population Dynamics; D012106:Research; D012725:Sexual Behavior; D014481:United States
Americas; Contraception; Contraceptive Methods; Contraceptive Usage--men; Demographic Factors; Developed Countries; Family Planning; Fertility; Male Contraception; Men; North America; Northern America; Population; Population Dynamics; Reproductive Behavior--men; Summary Report; United States