Schiff, E R Percutaneous transhepatic cholangiography using thin flexible needle. [electronic resource] - New York state journal of medicine Jul 1979 - 1194-5 p. digital Publication Type: Journal Article ISSN: 0028-7628 Subjects--Topical Terms: Cholangiography--instrumentationDiagnosis, DifferentialEndoscopy--methodsHumansNeedles