PT  - JOURNAL ARTICLE
AU  - J Penston
AU  - K G Wormsley
TI  - Reply
AID  - 10.1136/gut.28.9.1191
DP  - 1987 Sep 01
TA  - Gut
PG  - 1191--1192
VI  - 28
IP  - 9
4099  - http://gut.bmj.com/content/28/9/1191.short
4100  - http://gut.bmj.com/content/28/9/1191.full
SO  - Gut1987 Sep 01; 28