Journal Article Refractory Periodontitis in a Colombian Population: Predominant Anaerobic Bacterial Flora and Antibiotic Susceptibility Get access G. I. Mejía, G. I. Mejía From the Bacteriology Section, Corporación para Investigaciones Biológicas, and the School of Dentistry, Universidad de Antioquia, Medellín, Colombia Search for other works by this author on: Oxford Academic PubMed Google Scholar A. Botero, A. Botero From the Bacteriology Section, Corporación para Investigaciones Biológicas, and the School of Dentistry, Universidad de Antioquia, Medellín, Colombia Search for other works by this author on: Oxford Academic PubMed Google Scholar W. Rojas, W. Rojas From the Bacteriology Section, Corporación para Investigaciones Biológicas, and the School of Dentistry, Universidad de Antioquia, Medellín, Colombia Search for other works by this author on: Oxford Academic PubMed Google Scholar J. A. Robledo J. A. Robledo From the Bacteriology Section, Corporación para Investigaciones Biológicas, and the School of Dentistry, Universidad de Antioquia, Medellín, Colombia Reprints or correspondence: Dr. Jaime A. Robledo, Corporación para Investigaciones Biológicas, Bacteriology Section, Apartado Aereo 73-78, Medellín, Colombia. Search for other works by this author on: Oxford Academic PubMed Google Scholar Clinical Infectious Diseases, Volume 20, Issue Supplement_2, June 1995, Pages S311–S313, https://doi.org/10.1093/clinids/20.Supplement_2.S311 Published: 01 June 1995