Gut : an international journal of gastroenterology and hepatology / editor Michael J G Farthing. vol. 40, no. 1-6, 1997
.
London :
BMJ Publishing Group,
Gut : an international journal of gastroenterology and hepatology / editor Michael J G Farthing. vol. 41, no. 1-6, 1997
.
London :
BMJ Publishing Group,