1. Department of Geriatrics, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
2. Department of Obstetrics, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
3. ECG Functional Department, Zhejiang Province People’s Hospital, Hangzhou, Zhejiang, China
4. The Second Central Laboratory, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
5. Department of Endocrinology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China