title: [Some problems found in a retrospective survey of fertility in Haidian district, Beijing].
authors.forename: Y
authors.initials: Y
authors.lastname: Ye
mesh_terms: D001208:Asia; D001721:Birth Intervals; D001722:Birth Order; D001723:Birth Rate; D002681:China; D003710:Demography; D003906:Developing Countries; D005202:Asia, Eastern; D005298:Fertility; D008393:Marriage; D011153:Population; D011157:Population Dynamics; D017584:Reproductive History; D012106:Research; D012189:Retrospective Studies
keywords: Asia; Birth Intervals; China; Demographic Factors; Developing Countries; Eastern Asia; Fertility; Fertility Measurements; Fertility Surveys; First Birth; First Birth Intervals; Marriage; Marriage Age; Marriage Patterns; Nuptiality; Population; Population Dynamics; Pregnancy History; Research Methodology; Retrospective Studies; Studies