C N Smyth. Show Affiliations »
Abstract
Entities: Species
Mesh: See more » AnimalsBiomechanical PhenomenaCervix Uteri/physiologyCesarean SectionFemaleHistory, 19th CenturyHistory, AncientHumansIndians, North AmericanLabor, ObstetricMidwifery/historyModels, BiologicalPlacenta/physiologyPosturePregnancyPressurePrimates/physiologyUltrasonics
Year: 1974 PMID: 4595126 PMCID: PMC1645351
Source DB: PubMed Journal: Proc R Soc Med ISSN: 0035-9157