[1]
Shahravan, A., Haghdoost, A.-A., Rad, M., Hashemipoor, M. and Sharifi, M. 2013. Sample Size Calculation of Clinical Trials Published in Two Leading Endodontic Journals. Iranian Endodontic Journal. 9, 1 (Dec. 2013), 56–60. DOI:https://doi.org/10.22037/iej.v9i1.3552.