2Basdogan C, Ho C H, Srinivasan M A. Virtual environments for medical training: Graphical and haptic simulation of la- paroscopic common bile duct exploration[J].IEEE/ASME Transactions on Mechatronics, 2001, 6(3): 269.
3Rijna H, Rijsbouts Q A J, Barhof F, et al. Assessment of the biliary tract by ultrasonography and cholangiography dur- ing laparoscopic cholecystectomy: A prospective study [J].European Journal of Ultramund, 1999, 9(2) : 127.
4Schirmer B, Winters K L, Edilich R F. Cholelithiasis and cholecystitis[J ]. Journal of Long term Effects of Medical Implants, 2005, 15(3) : 329.
