1. Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University , Tianjin 300211 , China
2. Department of Preventive Medicine, School of Public Health, North China University of Science and Technology , Tangshan 063210 , China
3. Kent and Medway Medical School, University of Kent and Canterbury Christ Church University, Canterbury, Kent CT2 7NT, UK
4. School of Nursing and Health Studies, Hong Kong Metropolitan University , Hong Kong , China
5. Department of Cardiology, Kailuan Hospital, North China University of Science and Technology , Tangshan City , China