1. Departments of Pediatrics (T.S.B., S.E.T., C.W.Y., R.W., W.V.T., M.S., A.A.S., S.C.), New Haven, Connecticut 06520
2. the General Clinical Research Center (J.D.), Yale University School of Medicine, New Haven, Connecticut 06520
3. Diagnostic Radiology (T.R.G., X.P., R.T.C.), New Haven, Connecticut 06520