Ershad, R., Hossain, M. M., Alam, M. S., & Asaduzzaman, A. (2016). A Comparative Randomised Clinical Study Between Nebulised Fentanyl and Intravenous Fentanyl For Post Operative Pain Relief. Journal of the Bangladesh Society of Anaesthesiologists, 27(1), 27–30. https://doi.org/10.3329/jbsa.v27i1.28997