Uzunkaya, Meral, and Hasan Gundogar. “Evaluation of Periostin Levels in Gingival Crevicular Fluid and Peri-Implant Sulcus Fluid in Patients With Periodontal and Peri-Implanter Disease: A Cross-Sectional Study”. Annals of Medical Research 26, no. 10 (May 25, 2021): 2093–2097. Accessed May 18, 2024. http://www.annalsmedres.org/index.php/aomr/article/view/1821.