PT - JOURNAL ARTICLE AU - João D Ferreira AU - Daniela Paolotti AU - Francisco M Couto AU - Mário J Silva TI - On the usefulness of ontologies in epidemiology research and practice AID - 10.1136/jech-2012-201142 DP - 2013 May 01 TA - Journal of Epidemiology and Community Health PG - 385--388 VI - 67 IP - 5 4099 - http://jech.bmj.com/content/67/5/385.short 4100 - http://jech.bmj.com/content/67/5/385.full SO - J Epidemiol Community Health2013 May 01; 67