[1] Mayo Clin Minnesota, Div Gastroenterol & Hepatol, Rochester, MN USA
[2] Mayo Clin Minnesota, Precis Populat Sci Lab, Rochester, MN USA
[3] Mayo Clin Minnesota, Gastroenterol & Hepatol, Rochester, MN USA
[4] Mayo Clin Rochester, Gastroenterol & Hepatol, Rochester, MN USA
[5] Mayo Clin Rochester, Dept Biomed Stat & Informat, Rochester, MN USA
[6] Mayo Clin Minnesota, Rochester, MN USA