Health insurance and education: major contributors to oral health inequalities in Colombia
Carol C Guarnizo-Herreño, Richard G Watt, Nathaly Garzón-Orjuela, Elizabeth Suárez-Zúñiga, Georgios Tsakos
J Epidemiol Community Health Aug 2019, 73 (8) 737-744; DOI: 10.1136/jech-2018-212049