Smaller is better.
Unger
S W
SW
Paramo
J
J
Perez-Izquierdo
M
M
D017081:Cholecystectomy, Laparoscopic / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D004869:Equipment Safety; D006801:Humans; D019060:Minimally Invasive Surgical Procedures / Q000295:instrumentation; D013525:Surgical Instruments / Q000592:standards*