1 Department of Education and Psychology, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal.
2 Sleep Disorders and Research Center, Henry Ford Hospital, Detroit, MI 48202, USA.
3 Department of Education and Psychology, University of Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal; CINEICC - Center for Research in Neuropsychology and Cognitive Behavioral Intervention, Faculty of Psychology and Educational Sciences, University of Coimbra, Portugal. Electronic address: [email protected].