SCIENTIFIC 312.855 1998 Scientific Session of the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) Seattle, Washington, USA, April 1-4, 1998 : oral presentations. -[New York : Springer-Verl., 1998. - [2], 78 s. ; 27 cm. - (Surgical Endoscopy : Ultrasound and Interventional Techniques, ISSN 0930-2794 ; su-1. to vol.12)