TY  - RPRT
TI  - A prospective randomized trial comparing pneumoperitoneum and U-shaped retractor elevation for laparoscopic cholecystectomy.
AU  - S Kitano
AU  - Y Iso
AU  - M Tomikawa
AU  - M Moriyama
AU  - K Sugimachi
DO  - 10.1007/bf00725947
UR  - https://pubmed.ncbi.nlm.nih.gov/8351603/
ID  - 8351603
ER  -