Sepehri, Mehrdad, Mehrnnoosh Hajijalili, and Ehsan Namaziandost. 2019. “Hedges and Boosters in Medical and Engineering Research Articles: A Comparative Corpus-Based Study”. Global Journal of Foreign Language Teaching 9 (4):215-25. https://doi.org/10.18844/gjflt.v9i4.4342.