TY - RPRT TI - Laparoscopic cholecystectomy--how does it work and how long does it take? AU - R Woisetschläger AU - W Wayand PY - 1991 DO - 10.1007/bf02653212 UR - https://pubmed.ncbi.nlm.nih.gov/1837183/ ID - 1837183 ER -