Nikolopoulos Georgios K, Fotiou Anastasios
a 1 Transmission Reduction Intervention Project (TRIP) , Athens , Greece.
b 2 Hellenic Center for Disease Control and Prevention , Athens , Greece.
Subst Use Misuse. 2015;50(8-9):1220-2. doi: 10.3109/10826084.2015.1042326.