Naseri, M., Y. Safi, A. Akbarzadeh Baghban, A. Khayat, and L. Eftekhar. “Survey of Anatomy and Root Canal Morphology of Maxillary First Molars Regarding Age and Gender in an Iranian Population Using Cone-Beam Computed Tomography”. Iranian Endodontic Journal, vol. 11, no. 4, Sept. 2016, pp. 298-03, doi:10.22037/iej.v11i4.9684.