1. From the Edison Family Center for Genome Sciences and Systems Biology (R.Y.C., V.L.K., M.C.H., J.G., B.D.L., K.A., E.K., J.S.-B., M.J.B., J.I.G.), the Center for Gut Microbiome and Nutrition Research (R.Y.C., V.L.K., M.C.H., J.G., K.A., M.J.B., J.I.G.), and the Department of Pathology and Immunology (V.L.K., M.J.B., J.I.G.), Washington University School of Medicine, St. Louis; the International Center for Diarrhoeal Disease Research, Bangladesh (S.D., M.S.H., M.M., S.M.F., M.A.G., R.H., S.A.S., R.N.M., T...