Thapa, V.B., Shrestha, A., Sherchan, P., Poudel, P. and Joshi, L. 2018. Twin block appliance: Effect on pharyngeal airway. Journal of Kathmandu Medical College. 7, 4 (Dec. 2018), 147–152. DOI:https://doi.org/10.3126/jkmc.v7i4.23299.