1. Division of Endocrinology, Department of Medicine, Albert Einstein College of Medicine, Yeshiva University, Bronx, New York.
2. Division of Endocrinology, Department of Medicine, Montefiore Medical Center, Bronx, New York.
3. Department of Pathology, Albert Einstein College of Medicine, Yeshiva University, Bronx, New York.
4. Department of Pathology, Montefiore Medical Center, Bronx, New York.