1. From the Mallinckrodt Institute of Radiology–Pediatric Radiology, Washington University School of Medicine, St Louis, Mo (J.L.N., K.E.D.); Colegio de Ciencias de la Salud, Universidad de San Francisco de Quito, Quito, Ecuador (W.W.); and Brown School of Social Work and Public Health, Washington University, St Louis, Mo (C.A.G.R., M.C., D.V.H., S.T., C.M., L.I.).