Oral Administration of Cannabis and Δ-9-tetrahydrocannabinol (THC) Preparations : A Systematic Review - Poyatos, Lourdes (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Pérez-Acevedo, Ana Pilar (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Papaseit, Esther (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Pérez-Mañá, Clara (Institut Germans Trias i Pujol) ; Martin, Soraya (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Hladun, Olga (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol) ; Siles, Adrià (Institut Germans Trias i Pujol) ; Torrens, Marta (Universitat Autònoma de Barcelona. Departament de Psiquiatria i de Medicina Legal) ; Busardo, Francesco Paolo (Università Politecnica delle Marche, Ancona) ; Farre, Magi (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)