1. Department of Clinical Medicine, College of Medicine Pingdingshan University Pingdingshan Henan China
2. Department of Gastroenterology The First Affiliated Hospital of Pingdingshan University Pingdingshan Henan China
3. Department of Cardiology The First Affiliated Hospital of Pingdingshan University Pingdingshan Henan China
4. Department of Endocrinology The First Affiliated Hospital of Pingdingshan University Pingdingshan Henan China