TY - RPRT TI - Changes in gallbladder surgery: comparative study 4 years before and 4 years after laparoscopic cholecystectomy. AU - J Cervantes AU - G Rojas AU - J Anton PY - 1997 DO - 10.1007/s002689900216 UR - https://pubmed.ncbi.nlm.nih.gov/8995079/ ID - 8995079 ER -