Wilson, P.Roberts-Thomson, I.2006-06-252006-06-251998Journal of Gastroenterology and Hepatology, 1998; 13(6):657-0815-9319http://hdl.handle.net/2440/8968enImages in gastroenterology: impacted stones in the ampulla of VaterJournal article0030004871001998141768877Roberts-Thomson, I. [0000-0001-6075-3643]