[1] Univ Louisville Hlth, Div Gastroenterol Hepatol & Nutr, Louisville, KY USA
[2] Univ South Dakota, Div Gastroenterol & Hepatol, Sioux Falls, SD USA
[3] Hosp Clin Barcelona, Dept Digest & Metab Dis, Liver Unit, Barcelona, Spain
[4] Stanford Univ, Div Gastroenterol & Hepatol, Vet Affairs Palo Alto Healthcare Syst, Sch Med, Palo Alto, CA USA
[5] Univ Virginia, Div Gastroenterol & Hepatol, Charlottesville, VA USA
[6] Univ Southern Calif, Div Gastrointestinal & Liver Dis, Los Angeles, CA USA
[7] Mayo Clin, Div Gastroenterol & Hepatol, Rochester, MN 55905 USA