Tan, S Y Response to: Approach to evaluation of choledocholithiasis in patient with or without acute cholangitis. [electronic resource] - QJM : monthly journal of the Association of Physicians 06 2020 - 449-450 p. digital Publication Type: Letter; Comment ISSN: 1460-2393 Standard No.: 10.1093/qjmed/hcaa076 doi Subjects--Topical Terms: Cholangiopancreatography, Endoscopic RetrogradeCholangitisCholedocholithiasisHumans