Khojaste, M., S. Navabi, and F. Shiezadeh. “Treatment of a Hopeless Tooth With Combined Endodontic-Periodontal Lesion Using Guided Tissue Regeneration: A Case Report With One Year Follow-up”. Iranian Endodontic Journal, vol. 17, no. 4, Oct. 2022, pp. 212-5, doi:10.22037/iej.v17i4.38667.