RT Journal Article SR Electronic T1 Dyspnoea: diagnostic challenge JF Breathe JO breathe FD European Respiratory Society SP 269 OP 273 VO 4 IS 3 A1 T. Saaresranta A1 U. Anttalainen A1 J. Toikka A1 O. Polo YR 2008 UL http://breathe.ersjournals.com/content/4/3/269.abstract AB