1. Department of Nutrition, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, Shaanxi, China (mainland)
2. Health Examination Center, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, Shaanxi, China (mainland)
3. Department of Geriatric Surgery, The First Affiliated Hospital of Medical School, Xi’an Jiaotong University, Xi’an, Shaanxi, China (mainland)
4. Urology Institute, Xi’an Jiaotong University, Xi’an, Shaanxi, China (mainland)