1. University of California, San Francisco, San Francisco, California 94122;
2. Division of Endocrinology, The Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania 19104;
3. Institute of Biomembranes and Bioenergetics, Consiglio Nazionale delle Ricerche, 70126 Bari, Italy;
4. Department of Biosciences, Biotechnologies and Biopharmaceutics, Laboratory of Biochemistry and Molecular Biology, University of Bari, 70126 Bari, Italy;
5. Alfred I. duPont Hospital for Children, Wilmington, Delaware 19803;
6. Hasbro Children’s Hospital and Alpert Medical School of Brown University, Providence, Rhode Island 02903; and
7. Departments of Genetics and
8. Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104