Dalaei Moghadam, M. and Farahi, F. 2021. Endodontic Treatment of Bilateral Mandibular First Premolars with Three Root Canals: A Report of Two Cases. Iranian Endodontic Journal. 16, 4 (Oct. 2021), 261–264. DOI:https://doi.org/10.22037/iej.v16i4.34781.