0036-3634 0036-3634 S0036-36342017000500504 10.21149/8465 México México México 00 10 2017 00 10 2017 59 5 504 505 2010 38 4 4 1045-53 2003 163 8 8 972-8 2014 312 14 14 1438-46 World Health Organization Collaborating Centre for Drug Statistics Methodology 2016 2013 4 CD003543 2014 63