1. Endocrinology and Diabetes Center of Tidewater, 3205 Churchland Blvd, Chesapeake, VA 23321, USA
2. Endocrinology, Dartmouth-Hitchcock Clinic, 100 Hitchcock Way, Manchester, NH 03104, USA
3. Department of Pathology, University of Massachusetts Medical School, One Innovation Drive, Biotech Three, Worcester, MA 01605, USA
4. Thyroid Associates, Massachusetts General Hospital, 15 Parkman Street, Suite #730S, Boston, MA 02114, USA