@article{c917ba32336945d5bc1738eb07fbc8d1,
title = "Comments on Hynes et al. Prevalence of marijuana use among university students in Bolivia, Colombia, Ecuador and Peru. Int. J. Environ. Res. Public Health 2015, 12, 5233–5240",
abstract = "We have read and analyzed the article entitled “Prevalence of marijuana use among university students in Bolivia, Colombia, Ecuador and Peru”. We propose some objective points which could enhance the internal validity of the study (i.e., we suggest to report participation proportions).",
keywords = "Cannabis, Epidemiology, Latin America, Participation rate, Prevalence proportion",
author = "Martinez-Novack, \{Maria Claudia\} and Ortiz-Ortiz, \{Maria Teresa\} and Bruno Casta{\~n}eda-Carbajal and Alvarado, \{German F.\}",
note = "Publisher Copyright: {\textcopyright} 2015 by the authors; licensee MDPI, Basel, Switzerland.",
year = "2015",
month = sep,
day = "17",
doi = "10.3390/ijerph120911718",
language = "Ingl{\'e}s",
volume = "12",
pages = "11718--11720",
journal = "International Journal of Environmental Research and Public Health",
issn = "1661-7827",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "9",
}