1.
Wulandari P, Widkaja D, Nasution AH, Syahputra A, Gabrina G. Association between age, gender and education level with the severity of periodontitis in pre-elderly and elderly patients. Dent. J. [Internet]. 2022 Mar. 1 [cited 2024 Dec. 27];55(1):16-20. Available from: https://e-journal.unair.ac.id/MKG/article/view/31363