[1] Yale Univ, Sch Med, Sect Digest Dis, New Haven, CT 06520 USA
[2] Harvard Univ, Sch Med, Pediat Gastroenterol & Nutr Unit, Mass Gen Hosp Children, Boston, MA 02115 USA
[3] Tufts Univ, Sch Med, Div Nutr & Infect, Boston, MA 02111 USA
[4] Univ Chicago, Comer Childrens Hosp, Dept Pediat, Chicago, IL 60637 USA
[5] Univ Washington, Div Gastroenterol, Seattle, WA 98195 USA
[6] Dairy & Food Culture Technol, Centennial, CO USA
[7] Natl Univ Ireland Univ Coll Cork, Alimentary Pharmabiot Ctr, Cork, Ireland
[8] Univ Turku, Dept Pediat, Turku, Finland
[9] Univ Alberta, Div Gastroenterol, Edmonton, AB T6G 2M7, Canada