Aminzouhori, Mohammad, et al. “The Use of Platelets-Rich Fibrin (PRf) to Accelerate Healing Process After Tooth Extraction and Dental Implants”. Caucasus Journal of Health Sciences and Public Health, vol. 4, no. 5, Dec. 2020, p. 81, https://caucasushealth.ug.edu.ge/index.php/caucasushealth/article/view/334.