Fraire-Reyes, I. A.; Gaitán-Fonseca, C.; Cepeda-Argüelles, Óscar; Esparza-Villalpando, V.; Aguilera-Galavíz, L.; Bermúdez-Jiménez, C. Use and Effectiveness of Propolis on Chronic Periodontitis: A Systematic Review. Odovtos - Int J Dent Sc 2021, 24, 32-43.