Nalamachu, MD, S. R., Parikh, N., Dillaha, MD, L., & Rauck, MD, R. (2014). Lack of correlation between the effective dose of fentanyl sublingual spray for breakthrough cancer pain and the around-the-clock opioid dose. Journal of Opioid Management, 10(4), 247–254. https://doi.org/10.5055/jom.2014.0212