Derek J Hausenloy1, Gerd Heusch2. 1. The Hatter Cardiovascular Institute, Institute of Cardiovascular Science, University College London, London, United Kingdom; Cardiovascular and Metabolic Disorders Program, Duke-National University of Singapore, Singapore. 2. Institute for Pathophysiology, West German Heart and Vascular Centre, University of Essen Medical School, Essen, Germany. Electronic address: Gerd.Heusch@uk-essen.de.