title: An example of selection bias in submissions of aborted bovine fetuses to a diagnostic laboratory.
authors.affiliation: Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis 95616.
authors.forename: M C
authors.initials: MC
authors.lastname: Thurmond
authors.forename: P C
authors.initials: PC
authors.lastname: Blanchard
authors.forename: M L
authors.initials: ML
authors.lastname: Anderson
mesh_terms: D000034:Abortion, Veterinary / Q000453:epidemiology / Q000469:parasitology; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000469:parasitology; D019411:Clinical Laboratory Techniques / Q000662:veterinary; D003048:Coccidiosis / Q000453:epidemiology / Q000662:veterinary*; D005260:Female; D005315:Fetal Diseases / Q000469:parasitology / Q000662:veterinary*; D011247:Pregnancy; D015597:Pregnancy Complications, Parasitic / Q000453:epidemiology / Q000209:etiology / Q000662:veterinary; D015983:Selection Bias