C. Carrero-Martínez, M. C. González-Gilbert, M. A. Martínez-Lapiolo, F. Serna-Varona, H. Díez-Ortega, and A. Rodríguez-Ciodaro, “Low frequency of enterococcus faecalis in the oral mucosa of subjects attending dental consultation”, Rev Fac Odontol Univ Antioq, vol. 26, no. 2, pp. 261–270, Apr. 2015.