1. Department of Physiology and Key Lab of Ministry of Education in Fertility Preservation and Maintenance Ningxia Medical University Yinchuan China
2. Department of Ultrasonography Changhai Hospital Shanghai China
3. Department of General Internal Medicine Branch of 411 Hospital of People's Liberation Army Shanghai China
4. Department of Physiology Second Military Medical University Shanghai China
5. Key Laboratory of Arrhythmias of the Ministry of Education of China Shanghai East Hospital Tongji University School of Medicine Shanghai China