1. Department of Gerontology, Renmin Hospital of Three Gorges University and The First People’s Hospital of Yichang, Yichang, Hubei, China (mainland)
2. Department of Endocrinology, Renmin Hospital of Three Gorges University and The First People’s Hospital of Yichang, Yichang, Hubei, China (mainland)
3. Department of General Surgery, Renmin Hospital of Three Gorges University and The First People’s Hospital of Yichang, Yichang, Hubei, China (mainland)