Effectiveness evaluation of the school-based drug prevention program #Tamojunto2.0: protocol of a cluster randomized controlled trial - Sanchez, Zila van der Meer; Valente, Juliana Y; Pereira, Ana Paula Dias; Cogo-Moreira, Hugo; Melo, Márcia Helena da Silva; Caetano, Sheila C; Mari, Jair J (BMC Public Health, 2019)