1. ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
2. Universitat Pompeu Fabra (UPF), Barcelona, Spain
3. CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
4. Physical Activity and Sports Sciences Department, Fundació Blanquerna, Barcelona, Spain
5. Swiss Tropical and Public Health Institute, Basel, Switzerland
6. University of Basel, Basel, Switzerland