1. Radiology Department, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania.
2. Institute of Endocrinology and Metabolism, Kyiv, Ukraine.
3. Department of Medicine, The Thyroid Center, College of Physicians and Surgeons, Columbia University, New York, New York.
4. Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland.
5. Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York.
6. Department of Epidemiology and Biostatistics, School of Medicine, University of California, San Francisco, California.