1. Department of Nutrition, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
2. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central
South University, Changsha, China
3. Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha,
China
4. Department of Reproduction and Genetics, the First Affiliated Hospital of Kunming Medical University,
Kunming, China