1. Department of Cardiology, the Second Affiliated Hospital of Dalian Medical University, Dalian Medical University, Dalian, Liaoning, China
2. Department of Physiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, Liaoning, China
3. Department of Anesthesiology, General Hospital of The Yang Tze River Shipping, Wuhan Brain Hospital, Wuhan, China
4. Department of Physiology, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana