Mohammadzadeh Akhlaghi, N. et al. 2013. The Effect of Size and Taper of Apical Preparation in Reducing Intra-Canal Bacteria: A Quantitative SEM Study. Iranian Endodontic Journal. 9, 1 (Dec. 2013), 61–65. DOI:https://doi.org/10.22037/iej.v9i1.4327.