The trends of contraceptives of people in Shanghai since early 1980s.
D001208:Asia; D002681:China; D003267:Contraception; D003268:Contraception Behavior; D003710:Demography; D003906:Developing Countries; D005193:Family Planning Services; D005202:Asia, Eastern; D005298:Fertility; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D014505:Urban Population
Asia; China; Contraception; Contraceptive Usage--changes; Demographic Factors; Developing Countries; Eastern Asia; Family Planning; Fertility; Low Fertility Population; Population; Population Characteristics; Population Dynamics; Urban Population