University of Vigo

NCT00725127

Phase 4, Active, not recruiting, 2008, 3,200 people, 30 Jul 2008, clinicaltrials.gov

NCT00449618

Phase 4, Terminated, 2007, 23 people, 20 Mar 2007, clinicaltrials.gov

NCT00295542

Phase 4, Completed, 2000, 3,344 people, 23 Feb 2006, clinicaltrials.gov