J SPONAR, L PIVEC, Z SORMOVA. Show Affiliations »
Abstract
Mesh: See more » FemaleHumansLabor, ObstetricPregnancyWork
Year: 1964 PMID: 14097423 PMCID: PMC1815038 DOI: 10.1136/bmj.1.5386.793
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447