1. Department of Endocrinology, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
2. Department of Cardiology, Xiangya Hospital, Central South University, Changsha 410078, China
3. National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
4. Division of Pediatric Surgery, Department of Surgery, Children’s Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA 15224, USA