Efficacy and safety of fentanyl pectin nasal spray compared with immediate-release morphine sulfate tablets in the treatment of breakthrough cancer pain: A multicenter, randomized, controlled, double-blind, double-dummy multiple-crossover study

1. Fallon, M.
2. Reale, C.
3. Davies, A.
4. Lux, A.E.
5. Kumar, K.
6. Stachowiak, A.
7. Galvez, R.