Some observations on the prediction of calving difficulty.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D005260:Female; D007512:Ischium; D007744:Obstetric Labor Complications / Q000453:epidemiology / Q000662:veterinary*; D010387:Pelvimetry / Q000662:veterinary; D011247:Pregnancy