Kim S, Jung H, Park J, Baek J, Yun Y, Hong J, Kim E.  Comparison of Fentanyl-Based Rapid Onset Opioids for the Relief of Breakthrough Cancer Pain: Drug Price Based on Effect Size.  Korean J Clin Pharm 2023;33:43-50.  https://doi.org/10.24304/kjcp.2023.33.1.43