Cutting through to the chafe of the problem?
McClendon
D M
DM
Department of Gastroenterology, Wilford Hall Medical Center, Lackland AFB, TX, USA.
Schutz
S M
SM
D000368:Aged; D014670:Ampulla of Vater / Q000601:surgery*; D002404:Catheterization / Q000379:methods; D002760:Cholangiopancreatography, Endoscopic Retrograde; D004724:Endoscopy; D006801:Humans; D008875:Middle Aged