Jiménez-Báez, M. V., Márquez-González, H., Bárcenas-Contreras, R., Morales-Montoya, C. and García-Espinosa, L. F. (2015) “Early diagnosis of diabetic retinopathy in primary care”, Colombia Medica, 46(1), pp. 14–18. doi: 10.25100/cm.v46i1.1681.