C. R. Invernizzi-Mendoza, R. M. Cardozo-Vera, S. A. Chamorro-Giménez, and M. E. Acosta-de Hetter, “Frequency of periodontal diseases and clinical characteristics of patients treated at the Department of Periodontics of the Autonomous University of Asunción”, Mem. Inst. Investig. Cienc. Salud, vol. 22, no. 1, Mar. 2024.