Khojaste, M., Navabi, S. and Shiezadeh, F. (2022) “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, 17(4), pp. 212–215. doi: 10.22037/iej.v17i4.38667.