| 1. | Mancini I, Body JJ. Assessment of dyspnea in advanced cancer patients. Support Care Cancer, 1999; 7(4): 229-232. | 
				                                                        
				                                                            
				                                                                | 2. | Guyatt GH, Rennie D, Editors, The Evidence-Based Medicine Working Group. Users Guides to the Medical Literature: A Manual for Evidence-Based Clinical Practice. Chicago: AMA Press; 2002. | 
				                                                        
				                                                            
				                                                                | 3. | Solà I, Thompson E, Subirana M, et al. Non-invasive interventions for improving well-being and quality of life in patients with lung cancer. The Cochrane Database of Systematic Reviews 2004, Issue 4. | 
				                                                        
				                                                            
				                                                                | 4. | Jennings AL, Davies AN, Higgins JPT, et al. Opioids for the palliation of breathlessness in terminal illness. The Cochrane Database of Systematic Reviews 2001, Issue 3. | 
				                                                        
				                                                            
				                                                                | 5. | Cohen MH, Anderson AJ, Krasnow SH, et al. Continuous intravenous infusion of morphine for severe dyspnea. South Med J, 1991; 84(2): 229-234. | 
				                                                        
				                                                            
				                                                                | 6. | Mazzocato C, Bucl in T, Rapin CH. The effects of morphine on dyspnea and ventilatory function in elderly patients with advanced cancer: a randomized double-blind controlled trial. Ann Oncol, 1999; 10(12): 1511-1514. | 
				                                                        
				                                                            
				                                                                | 7. | Hu WY, Chiu TY, Cheng SY, et al. Morphine for dyspnea control in terminal cancer patients: is it appropriate in Taiwan? J Pain Symptom Manage, 2004; 28(4): 356-363. | 
				                                                        
				                                                            
				                                                                | 8. | Grimbert D, Lubin O, de Monte M, et al. Dyspnea and morphine aerosols in the palliative care of lung cancer. Rev Mal Respir, 2004 ; 21(6 Pt 1): 1091-1097. | 
				                                                        
				                                                            
				                                                                | 9. | Zeppetella G. Nebul ized morphine in the palliation of dyspnoea. Palliat Med, 1997; 11(4): 267-275. | 
				                                                        
				                                                            
				                                                                | 10. | Bruera E, Sala R, Spruyt O, et al. Nebulized versus subcutaneous morphine for patients with cancer dyspnea: a preliminary study. J Pain Symptom Manage, 2005; 29(6): 613-618. | 
				                                                        
				                                                            
				                                                                | 11. | Zebraski SE, Kochenash SM, Raffa RB. Lung opioid receptors: pharmacology and possible target for nebulized morphine in dyspnea. Life Sci, 2000; 66(23): 2221-2231. | 
				                                                        
				                                                            
				                                                                | 12. | Elsasser S, Perruchoud AP. The treatment of terminal dyspnea. Schweiz Rundsch Med Prax, 1992; 81(1-2): 11-14. | 
				                                                        
				                                                            
				                                                                | 13. | Thomas JR, von Gunten CF. Clinical management of dyspnoea. Lancet Oncol, 2002; 3(4): 223-228. | 
				                                                        
				                                                            
				                                                                | 14. | Navigante AH, Cerchietti LC, Castro MA, et al. Midazolam as adjunct therapy to morphine in the alleviation of severe dyspnea perception in patients with advanced cancer. J Pain Symptom Manage, 2006; 31(1): 38-47. | 
				                                                        
				                                                            
				                                                                | 15. | Bruera E, de Stoutz N, Velasco-Leiva A, et al. Effects of oxygen on dyspnoea in hypoxaemic terminal-cancer patients. Lancet, 1993; 342(8862): 13-14. | 
				                                                        
				                                                            
				                                                                | 16. | Bruera E, Schoeller T, MacEachern T. Symptomatic benefit of supplemental oxygen in hypoxemic patients with terminal cancer: the use of the N of 1 randomized controlled trial. J Pain Symptom Manage, 1992; 7(6): 365-368. | 
				                                                        
				                                                            
				                                                                | 17. | Bruera E, Sweeney C, Willey J, et al. A randomized controlled trial of supplemental oxygen versus air in cancer patients with dyspnea. Palliat Med, 2003; 17(8): 659-663. |