1. 1) Roizen MF, Fischer SP : Preoperative evaluation : adults and children, Ambulatory anesthesia & surgery. edited by White PF. W.B. Saunders, London, 1997, 155∼172
2. 2) Roizen MF : Preoperative laboratory testing, ASA Refresher course, 2000, 244
3. Yield of routine annual laboratory screening in the institutionalized elderly.