title: Comparison of placentas from two socioeconomic groups. I. Morphometry.
mesh_terms: D000886:Anthropometry; D001724:Birth Weight; D001900:Boston; D005260:Female; D005865:Gestational Age; D006166:Guatemala; D006801:Humans; D008431:Maternal-Fetal Exchange; D009929:Organ Size; D010920:Placenta / Q000033:anatomy & histology* / Q000098:blood supply; D011247:Pregnancy; D012959:Socioeconomic Factors; D014327:Trophoblasts / Q000033:anatomy & histology; D014505:Urban Population