Ghalwash, D. M., Shaker, O. G. and Mahmoud, E. A. (2019) “Evaluation of Local and Systemic Levels of Vitamin D3 and Fibroblast Growth Factor 23 After Non-Surgical Periodontal Therapy”, Perio J, 3(1), pp. 38–48. doi: 10.26810/perioj.2019.a5.