1. From the Divisions of Preventive Medicine and2Department of Ophthalmology, Schepens Eye Research Institute, Harvard Medical School, Boston, Massachusetts; and the
2. From the Divisions of Preventive Medicine and
3. Hematology and the
4. Hematology and the4Division of Genetics, Children’s Hospital, Boston, Massachusetts.
5. From the Divisions of Preventive Medicine and5Center for Cardiovascular Disease Prevention, Brigham and Women’s Hospital, Boston, Massachusetts; the