1. Cardiovascular Clinic Institute, Hospital Clinic, University of Barcelona, Institut d’Investigacions Biomèdiques August Pi i Sunyer, Spain (L.O-P., S.B.).
2. Swiss Cardiovascular Center Bern, Bern University Hospital (S.A., S.W., M.V.)
3. Erasmus University Medical Center, Rotterdam, Netherlands (K.M.A.).
4. Clinical Trial Unit Bern, and Institute of Social and Preventive Medicine, University of Bern, Switzerland (A.K.).