1. Swiss Tropical and Public Health Institute, Basel, Switzerland
2. University of Basel, Basel, Switzerland
3. Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts, USA
4. SNA-EPIS (Système Nerveux Autonome, Epidémiologie, Physiologie, Exercice, Santé) Research Team (EA 4607), Department of Clinical and Exercise Physiology, University Hospital of Saint-Etienne, PRES (Pole Research and Higher Education), Lyon, France
5. Divisions of Cardiology and Primary Care Medicine, University Hospitals and Faculty of Medicine, Geneva, Switzerland
6. Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
7. Hospital del Mar Research Institute (IMIM), Barcelona, Spain
8. CIBER Epidemiología y Salud Pública (CIBERESP), Spain