[1] Emory Univ, Dept Pediat, Atlanta, GA 30322 USA
[2] Univ Massachusetts, Med Sch, Dept Microbiol & Physiol Syst, Worcester, MA 01605 USA
[3] Rush Univ, Med Ctr, Dept Physiol & Biophys, Chicago, IL 60612 USA
[4] Univ Massachusetts, Dept Med, Med Sch, Gastroenterol Div, Worcester, MA 01605 USA
[5] Childrens Healthcare Atlanta, Atlanta, GA USA
[6] Carl Zeiss Microscopy, Thornwood, NY USA
[7] Peak Gastroenterol, Colorado Springs, CO USA