1. Hospital for Children and Adolescents (G.M.C.F., J.K., W.F.B., H.S., R.W.P.), University of Leipzig, D-04103 Leipzig, Germany
2. The Children's Hospital at Westmead and University of Sydney (G.A., C.C., K.D., N.H.), Westmead, New South Wales 2145, Australia
3. Leonard Miller School of Medicine (Y.B., J.S.), University of Miami, Mailman Center for Child Development, Miami, Florida 33136
4. Lilly Research Laboratories (W.F.B.), Eli Lilly and Company, D-61352 Bad Homburg, Germany
5. Virginia Commonwealth University Health System (A.K.), Richmond, Virginia 23298