TAREGH, S.-A.- HAGH; HADAVI, M. R.; OMIDVARI, S.; DANESHFOROUZ, M. A. Comparison of the analgesic effects of Post-operative Morphine, Pre-emptive and Post-operative Paracetamol in Septorhinoplasty Surgery. Galen Medical Journal, v. 4, n. 2, p. 121-25, 8 May 2015.