?:authorAffiliation
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[\'Servicio de Medicina Preventiva y Salud Pública, Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain.\', \'Department of Economics, Faculty of Economics and Business, University of Barcelona, 08034 Barcelona, Spain.\', \'Department of Applied Economics, Public Economics and Political Economy, Faculty of Economics and Business, University Complutense of Madrid, 28223 Madrid, Spain.\']
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