[1] Temple Univ, Sch Med, Gastroenterol Sect, Philadelphia, PA 19140 USA
[2] Univ Mississippi, Med Ctr, Jackson, MS 39216 USA
[3] Ctr Diabet, Mamaroneck, NY USA
[4] Univ Tennessee, Ctr Hlth Sci, Memphis, TN 38163 USA
[5] Mayo Clin, Coll Med, Rochester, MN USA
[6] Univ Kansas, Med Ctr, Kansas City, KS 66103 USA
[7] Univ Michigan, Med Ctr, Ann Arbor, MI USA
[8] Univ S Alabama, Mobile, AL 36688 USA
[9] Univ Virginia Hlth Syst, Charlottesville, VA USA
[10] Univ Texas, Med Branch, Galveston, TX 77550 USA
[11] St Louis Univ, St Louis, MO 63103 USA
[12] Cedars Sinai Med Ctr, Los Angeles, CA 90048 USA
[13] Eastern Virginia Med Sch, Norfolk, VA 23501 USA