Affiliation: | From the ‡Department of Pediatrics and ;the ‖Departments of Pathology and Genetics, Yale University School of Medicine, New Haven, Connecticut 06520.;the §Department of Pediatrics, University of Rochester, Rochester, New York 14642, and ;the ¶Department of Biochemistry and Molecular Biology, Center for Comparative Genomics and Bioinformatics, Pennsylvania State University, University Park, Pennsylvania 16802 |