1. University of Salamanca, Department of Sociology and Communication. Observatorio de los Contenidos Audiovisuales (OCA). Faculty of Social Sciences. Campus Unamuno (Edificio FES). 37007. Salamanca, Spain
2. Department of Journalism and Audiovisual Communication, University Carlos III of Madrid, Madrid, Spain
3. Department of Social Communication, University of Cauca, Popayán, Colombia