[Feng, Gong] Xian Med Univ, Xian, Peoples R China.
[Byrne, Christopher D.] Univ Hosp Southampton, Southampton Gen Hosp, Southampton Natl Inst Hlth Res Biomed Res Ctr, Southampton, Hants, England.
[Targher, Giovanni] Univ Verona, Dept Med, Sect Endocrinol Diabet & Metab, Verona, Italy.
[Targher, Giovanni] Azienda Osped Univ Integrata Verona, Verona, Italy.
[Wang, Fudi] Zhejiang Univ, Affiliated Hosp 4, Sch Publ Hlth, Sch Med, Hangzhou, Peoples R China.