PT - JOURNAL ARTICLE AU - Belzer, C AU - Kusters, J G AU - Kuipers, E J AU - van Vliet, A H M TI - Urease induced calcium precipitation by <em>Helicobacter</em> species may initiate gallstone formation AID - 10.1136/gut.2006.098319 DP - 2006 Nov 01 TA - Gut PG - 1678--1679 VI - 55 IP - 11 4099 - http://gut.bmj.com/content/55/11/1678.short 4100 - http://gut.bmj.com/content/55/11/1678.full SO - Gut2006 Nov 01; 55