作者单位:Loma Linda Univ Hlth, Gastroenterol, Loma Linda, CA USA[1]Univ Michigan, Psychiat, Ann Arbor, MI 48109 USA[2]Univ Michigan, Stat, Ann Arbor, MI 48109 USA[3]Univ Michigan, Internal Med Hepatol, Ann Arbor, MI 48109 USA[4]Univ Michigan, Gastroenterol, Ann Arbor, MI 48109 USA[5]