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 Saaresranta, T. A1 Anttalainen, U. A1 Toikka, J. A1 Polo, O. YR 2008 UL http://breathe.ersjournals.com/content/4/3/269.abstract AB