1. Division of Endocrinology and Metabolism, Department of Medicine, Kurume University School of Medicine, Kurume, Fukuoka 830-0011, Japan
2. Department of Medicine, Nepean Clinical School, Nepean Hospital, The University of Sydney, Penrith, NSW 2751, Australia
3. Molecular Thyroid Research Laboratory, Department of Medicine I, Johannes Gutenberg University (JGU) Medical Center, 55101 Mainz, Germany
4. Department of Ophthalmology, Aichi Medical University, Nagakute, Aichi 480-1195, Japan