2卢纹岱 朱一力 沙捷.SPSS for Windows从入门到精通[M].北京:电子工业出版社,1998..
3李春喜 等.生物统计学[M].北京:科学出版社,2002..
4FALCONER A,FEGELMAN E J,NUSSBAUM M S,et al. A Prospective Comparison of Laparoscopic Ultrasound vs Intrao- perative Cholangiogram during Laparoscopic Cholecystectomy [J]. Surgical Endoscopy, 1999,13(8) :784-788.
5BAO P,WARMATH J, GALLOWAY R, et al. Ultrasound-to- computer-tomography Registration for Image-guided Laparo-scopic Liver Surgery [J]. Surg Endosc,2005(19):424-429.
6WAGNER A, SCHICHO K, BIRKFELLNER W, et al. Quanti- tative Analysis of Factors Affecting Intraoperative Precision and Stability of Optoeleetronic and Electromagnetic Tracking Systems [J]. Med Phys,2002,29(5):905-912.