Uses of error: and then there were three.
Lambalk
C B
CB
Department of Obstetrics, Vrije Universiteit Medical Centre, 1007 MB Amsterdam, Netherlands.
D002763:Cholecystectomy / Q000379:methods; D003135:Common Bile Duct / Q000000981:diagnostic imaging; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D011859:Radiography; D016216:Ultrasonography, Prenatal