@article{bustamante_carvalho_oliveira_oliveira júnior_santos figueroa_montoya vásquez_cazenave_chaname_medina matallana_ramirez castillo_2009,  title={University students' perceived norms of peers and drug use: a multicentric study in five Latin American countries},  volume={17},  ISSN={0104-1169},  url={https://doi.org/10.1590/S0104-11692009000700013},  DOI={10.1590/S0104-11692009000700013},  number={spe},  journal={Revista Latino-Americana de Enfermagem},  publisher={Escola de Enfermagem de Ribeirão Preto / Universidade de São Paulo},  author={Bustamante, Inés V. and Carvalho, Ana Maria Pimenta and Oliveira, Elias Barbosa de and Oliveira Júnior, Hercilio Pereira de and Santos Figueroa, Syntia Dinora and Montoya Vásquez, Erika Maria and Cazenave, Angelica and Chaname, Eva and Medina Matallana, Luz Stella and Ramirez Castillo, Julia},  year={2009},  pages={838–843} }