1 Department of Biomedical Sciences and Bispebjerg-Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark; Cardiology Department, Bispebjerg-Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark. Electronic address: hd@heart.dk.
2 Department of Pharmacology, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain; Instituto de Investigación Sanitaria, Hospital Universitario de La Paz, Madrid, Spain.