Maintenance: Thursday, 22 March 2018, 18:00-18:15
Maintenance work on the ZORA servers is provided. There may be short interruptions in the service between 18:00 and 18:15. Thank you for your patience.
Puhan, M A; Mador, M J; Held, U; Goldstein, R; Guyatt, G H; Schünemann, H J (2008). Interpretation of treatment changes in 6-minute walk distance in patients with COPD. European Respiratory Journal, 32(3):637-643.