[1] Tulane Univ, Sch Med, Tulane Natl Primate Res Ctr, Covington, LA 70433 USA
[2] Tulane Univ, Sch Med, Dept Microbiol & Immunol, New Orleans, LA 70118 USA
[3] Univ Toulouse III Paul Sabatier UT3, Univ Toulouse, Inst Pharmacol & Biol Struct IPBS, CNRS, Toulouse, France
[4] Cornell Univ, Gale & Ira Drukier Inst Childrens Hlth, Dept Pediat, Weill Cornell Med, New York, NY USA
[5] Univ Bern, Bern Univ Hosp, Dept Visceral Surg & Med, Bern, Switzerland
[6] Univ Bern, Dept Biomed Res, Maurice Muller Labs, Bern, Switzerland
[7] Harvard Med Sch, Brigham & Womens Hosp, Dept Med, Div Gastroenterol, Boston, MA USA