Corrigendum: Recreational drug use among individuals living with HIV in Europe: review of the prevalence, comparison with the general population and HIV guidelines recommendations - Garin, Noe; Velasco, Cesar; De Pourcq, Jan T.; Lopez, Belen; Gutierrez, Maria del Mar; Haro, Josep M.; Feliu, Anna; Mangues, Maria A.; Trilla, Antoni (Frontiers in Microbiology, 2015)