“Periodontal Biotype As a Factor in Gingival Recession in Adults Attending Periodontal Posgraduate Clinic UNMSM, Lima Peru”. 2016. Theorēma (Lima, Segunda época, En línea), no. 2 (June): 19-25. https://revistasinvestigacion.unmsm.edu.pe/index.php/Theo/article/view/11959.