TY - RPRT TI - Routine pre-operative cholangiography--a retrospective study. AU - R Gupta AU - S Sawhney AU - M Berry AU - N C Mishra PY - 1988 DO - 10.1111/j.1440-1673.1988.tb02781.x UR - https://pubmed.ncbi.nlm.nih.gov/3248088/ ID - 3248088 ER -