Laboratory for Cellular and Molecular Thyroid Research, Division of Endocrinology, Diabetes & Metabolism, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287. Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao 266003, China. Endocrine Unit, Department of Clinical and Experimental Medicine, University of Pisa School of Medicine, 56124 Pisa, Italy. Department of Internal Medicine, University of Perugia, 06100 Perugia, Italy. Division of Endocrine and Metabolic Diseases, IRCCS Istituto Auxologico Italiano and Department of Pathophysiology and Transplantation, University of Milan, 20122 Milan, Italy. Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, 44-101 Gliwice, Poland. Cancer Molecular Pathology of School of Medicine and Menzies Health Institute Queensland, Griffith University, Gold Coast 4222, Australia. Department of Medicine, Endocrinology Unit, University of Padua, Padua 35128, Italy. Veneto Institute of Oncology, Instituto di Ricovero e Cura a Carattere Scientifico, Padua 35128, Italy. Department of Surgery, Division of Endocrine Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213. Department of Endocrinology and Nutrition, Hospital La Paz, Health Research Institute, and Hospital Universitario de Móstoles, Department of Endocrinology, Hospital Universitario de Móstoles, 28029 Madrid, Spain. Biomedical Research Institute, "Alberto Sols," Spanish Council of Research Consejo Superior de Investigaciones Científicas and Autonomous University of Madrid, 28029 Madrid, Spain. Endocrine Surgical Unit, The University of Sydney, Sydney 2052, Australia. Department of Molecular Endocrinology, Institute of Endocrinology, Prague 11694, Czech Republic. Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao 266003, China. Department of Endocrinology and Metabolism, Shandong Provincial Hospital, Jinan 250021, China.