[1] Univ Calgary, Cumming Sch Med, Undergrad Med Educ, 3330 Hosp Dr Northwest G702, Calgary, AB T2N 4N1, Canada
[2] Univ Calgary, Cumming Sch Med, Dept Med, Div Resp Med, Calgary, AB, Canada
[3] Libin Cardiovasc Inst Alberta, Calgary, AB, Canada
[4] Peter Lougheed Ctr, 3500 26 Ave Northeast, Calgary, AB T1Y 6J4, Canada
[5] Univ Pierre & Marie Curie Univ Paris 06, Sorbonne Univ, INSERM, Unite Mixte Rech S 1158 Neurophysiol Resp Expt &, Paris, France
[6] Grp Hosp Pitie Salpetriere Charles Foix, AP HP, Serv Explorat Fonct Resp,Pole PRAGUES, Exercice & Dyspnee Hop Univ Pitie Salpetriere,Dep, Paris, France