10. O'Donnell DE, Fluge T, Gerken F, et al. Effects of tiotropium on lung hyperinflation, dyspnoea and exercise tolerance in COPD. Eur Respir J. 2004 23(6):832-48
11. Brusasco V, Hodder R, Miravitlles M, et al. Health outcomes following treatment for six months with once daily tiotropium compared with twice daily salmeterol in patients with COPD. Thorax 2003;58:399-404.
12. Pocket Guide to COPD diagnosis, management, and prevention - A guide for healthcare professionals. Global Initiative for Chronic Obstructive Lung Disease. Disponible en: http://www.goldcopd.com
Boehringer Ingelheim GmbH, Judith von Gordon, división de comunicaciones corporativas, teléfono: +49-6132-77-35-82