1. Department of Pharmacology, University of Oxford, United Kingdom (M.L., D.A.T.).
2. Key Laboratory of Medical Electrophysiology of the Ministry of Education and Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China (M.L., L.W.).
3. Department of Cardiology, Peking University First Hospital, Beijing, China (L.W.).
4. Physiological Laboratory (C.L.-H.H.), University of Cambridge, United Kingdom.
5. Department of Biochemistry (C.L.-H.H.). University of Cambridge, United Kingdom.