Prevalence of Intoxicating Substance Use Before or During Sex Among Young Adults : A Systematic Review and Meta-Analysis - Gómez-Núñez, María Isabel (International University of La Rioja, UNIR. Department of Research Methods and Diagnostics in Education) ; Molla Esparza, Cristian (University of Valencia, UVEG. Department of Research Methods and Diagnostics in Education) ; Gandia Carbonell, Natalia (Universitat Autònoma de Barcelona. Departament de Psicobiologia i de Metodologia de Ciències de la Salut) ; Badenes Ribera, Laura (University of Valencia, UVEG. Department of Methodology of the Behavioural Sciences)