Extrinsic factors: how they can affect a diagnosis.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis* / Q000209:etiology; D004935:Esophageal Diseases / Q000175:diagnosis / Q000209:etiology / Q000662:veterinary*; D005260:Female; D005547:Foreign Bodies / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*; D011247:Pregnancy