TY - JOUR T1 - Oesophagus JF - Gut JO - Gut SP - A41 LP - A44 DO - 10.1136/gut.38.Suppl_1.A41 VL - 38 IS - Suppl 1 A2 - , Y1 - 1996/01/01 UR - http://gut.bmj.com/content/38/Suppl_1/A41.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -