[1] Johns Hopkins Med Inst, Dept Med, Div Gastroenterol, Baltimore, MD 21205 USA
[2] Johns Hopkins Med Inst, Dept Med, Pancreatitis Ctr, Baltimore, MD USA
[3] Johns Hopkins Univ, William H Welch Med Lib, Baltimore, MD USA
[4] Univ Pittsburgh, Div Gastroenterol Hepatol & Nutr, Dept Med, Sch Med, Pittsburgh, PA USA
[5] Ohio State Univ, Wexner Med Ctr, Div Gastroenterol Hepatol & Nutr, Columbus, OH 43210 USA
[6] Indiana Univ, Med Ctr, Div Gastroenterol & Hepatol, Indiana, PA USA
[7] Aalborg Univ Hosp, Dept Gastroenterol & Hepatol, Ctr Pancreat Dis & Mech Sense, Aalborg, Denmark
[8] Aalborg Univ Hosp, Dept Clin Med, Aalborg, Denmark