Khan, M. H. I., Sadia, R. I., Ema, S. A., Shahabuddin, N. B., Rahman, R., & Iqbal, M. A. (2019). Relationship of age with periodontal diseases for males and females in Bangladesh; A hospital registry based cross-sectional observational study. Update Dental College Journal, 9(2), 13–16. https://doi.org/10.3329/updcj.v9i2.43733