1. Human Anatomy Laboratory, School of Basic Medicine Xinxiang Medical University Henan China
2. Human Anatomy Laboratory, the First Clinical College Xinxiang Medical University Henan China
3. Department of Medicine Yale New Haven Health‐Greenwich Hospital Greenwich Connecticut USA
4. Department of Cardiology The First Affiliated Hospital of Shantou University Medical College Guangdong China
5. Human Anatomy Laboratory, School of International Education Xinxiang Medical University Henan China
6. Department of Medicine Saint Vincent Hospital Worcester Massachusetts USA