About the Authors

Carlos Sirvent

Roles Investigation

Affiliation Institute of Drug Dependence “Spiral,” Oviedo, Principado de Asturias, Spain

Juan Herrero

Roles Investigation

Affiliation Department of Psychology, University of Oviedo, Oviedo, Principado de Asturias, Spain

María de la Villa Moral

Roles Investigation

Affiliation Department of Psychology, University of Oviedo, Oviedo, Principado de Asturias, Spain

Francisco Javier Rodríguez

Roles Investigation

gallego@uniovi.es

Affiliation Department of Psychology, University of Oviedo, Oviedo, Principado de Asturias, Spain

Competing Interests

The authors have declared that no competing interests exist.