1. MEDCIDS—Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal
2. CINTESIS—Centre for Health Technology and Services Research, Porto, Portugal
3. Public Health Unit, ACES Grande Porto VIII (ARS Norte), Espinho/Gaia, Portugal
4. Section of Hygiene, Institute of Public Health, Università Cattolica del Sacro Cuore, Fondazione Policlinico “A. Gemelli” IRCCS, Rome, Italy