Betancourt, P., Elgueta, R. and Fuentes, R. 2017. Treatment of endo-periodontal lesion using leukocyte- platelet- rich fibrin. A case report. Colombia Medica. 48, 4 (Dec. 2017), 204–207. DOI:https://doi.org/10.25100/cm.v48i4.2140.