title: Infertility and forager demography.
authors.affiliation: Department of Anthropology, Pennsylvania State University, University Park 16802.
authors.forename: H
authors.initials: H
authors.lastname: Harpending
mesh_terms: D000293:Adolescent; D000328:Adult; D017954:Africa South of the Sahara; D000367:Age Factors; D015982:Bias; D001721:Birth Intervals; D003710:Demography; D005006:Ethnicity; D005260:Female; D005298:Fertility; D006801:Humans; D007247:Infertility, Female / Q000209:etiology*; D008390:Markov Chains; D008875:Middle Aged; D008954:Models, Biological; D011247:Pregnancy; D012307:Risk Factors; D012749:Sexually Transmitted Diseases / Q000150:complications*