2019-08-222019-08-221906-01-012012-11-21https://hdl.handle.net/20.500.12503/26340application/pdfenMedical SpecialtiesMedicine and Health SciencesObstetrics and GynecologyGynecologyPregnancyObstetricsdiagnosiswomen's healthA Textbook of Obstetricsarticle