作者单位:Mayo Clin, Primary Care Internal Med, Rochester, MN 55902 USA[1]Mayo Clin, Endocrine Res Unit, Mayo Sch Grad Med Educ, Ctr Translat Sci Act, Rochester, MN 55902 USA[2]Leiden Univ, Med Ctr, Dept Endocrinol & Metab, NL-2333 ZA Leiden, Netherlands[3]