1. Divisions of Endocrinology and Mayo Clinic, Rochester, Minnesota, USA.
2. Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA.
3. Division of Endocrinology, Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA.
4. Divisions of Clinical Trials and Biostatistics, Mayo Clinic, Rochester, Minnesota, USA.
5. Diagnostic Division, Otsuka Pharmaceutical Co. Ltd., Tokyo, Japan.