1. Klaschik E (2009) Dyspnoe. In: Husebø S, Klaschik E (eds) Palliativmedizin. Aktualisierte, 5. Auflage. Springer, Berlin, pp 281–283
2. Heyse-Moore LH, Ross V, Mullee MA (1991) How much of a problem is dyspnoea in advanced cancer? Palliat Med 5:20–26
3. Pauwels RA, Buist AS, Calverley PMA, Jenkins CR, Hurd SS (2001) Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease: National Heart, Lung, and Blood Institute and World Health Organization Global Initiative for Chronic Obstructive Lung Disease (GOLD): executive summary. Respir Care 46:798–825
4. Chua TP, Harrington D, Ponikowski P et al (1997) Effects of dihydrocodeine on chemosensitivity and exercise tolerance in patients with chronic heart failure. J Am Coll Cardiol 29:147–152
5. Williams SG, Wright DJ, Marshall P et al (2003) Safety and potential benefits of low-dose diamorphine during exercise in patients with chronic heart failure. Heart 89:1085–1086