title: Prenatal sonography: a useful adjunct in the management of the gravid captive Pacific walrus (Odobenus rosmarus divergens).
authors.affiliation: Department of Radiology, Children's Hospital Medical Center, Cincinnati, OH 45229-3039.
authors.forename: L L
authors.initials: LL
authors.lastname: Barr
authors.forename: D
authors.initials: D
authors.lastname: Gillespie
authors.forename: M K
authors.initials: MK
authors.lastname: Campbell
authors.forename: D S
authors.initials: DS
authors.lastname: Babcock
mesh_terms: D000818:Animals; D000836:Animals, Zoo; D005260:Female; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000502:physiology; D016216:Ultrasonography, Prenatal / Q000662:veterinary*; D014856:Walruses