[1] Gartnavel Royal Hosp, Dept Pharm, Glasgow, Lanark, Scotland
[2] Univ Liverpool, Dept Pharmacol, Liverpool, Merseyside, England
[3] Gartnavel Royal Hosp, Dept Infect Dis, Glasgow, Lanark, Scotland
[4] Queen Elizabeth Univ Hosp, Dept Gastroenterol, Glasgow, Lanark, Scotland
[5] Royal Alexandria Hosp, Dept Gastroenterol, Paisley, Renfrew, Scotland
[6] Glasgow Royal Infirm, Walton Liver Clin, Glasgow, Lanark, Scotland