Bibliometrics is the quantitative analysis of research outputs and thus a validated, surrogate for overall research activity. Papers relevant to
cancer research, from Mexico were identified in the Web of Science (WoS) database by means of a complex filter containing lists of specialist
cancer journals and of title words indicative of cancer research, as previously described [30]. The bibliographic details of articles, notes,
and reviews with an address in Mexico and published between 1989 and 2012, were downloaded to a series of files. Mexican cancer papers
relevant to each of 16 cancer sites listed by the WHO in its Global Burden of Disease study, and four additional sites (brain, gallbladder,
kidney, and testes) of importance for Mexico, were identified within the spreadsheet by means of a series of subfilters. The percentage of
Mexican cancer research relevant to each site was then compared with the relative cancer burden estimated by GLOBOCAN, determined
on the basis of both DALYs (Disability-Adjusted Life Years) and deaths. Similarly, the type of research (e.g., epidemiology, genetics, and
surgery) was identified