TY - JOUR T1 - Practical gastrointestinal endoscopy JF - Gut JO - Gut SP - 594 LP - 594 DO - 10.1136/gut.24.6.594-a VL - 24 IS - 6 AU - K F R Schiller Y1 - 1983/06/01 UR - http://gut.bmj.com/content/24/6/594.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -