P. A. Olavegogeascoechea, J. A. Allevato, F. N. Olavegogeascoechea, P. Contreras, G. Valenzuela, and P. L. Urdiales, “Relationship Between Periodontal Disease (Periodontitis) and Major Vascular Events. A Case- Control Study. Enperiva Studio”, ESJ, vol. 13, no. 15, Jun. 2017.