[1] Queens Univ, Dept Med, Div Resp & Crit Care Med, Kingston, ON K7L 2V6, Canada
[2] Dalhousie Univ, Halifax, NS, Canada
[3] Family Phys Airway Grp Canada, Richmond Hill, ON, Canada
[4] Univ Ottawa, Ottawa, ON, Canada
[5] McGill Univ, Montreal, PQ, Canada
[6] Univ Saskatchewan, Saskatoon, SK, Canada
[7] Univ Toronto, Toronto, ON, Canada
[8] Univ Calgary, Calgary, AB, Canada
[9] Univ Montreal, Montreal, PQ, Canada
[10] Univ Laval, Ste Foy, PQ G1K 7P4, Canada
[11] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
[12] McMaster Univ, Hamilton, ON, Canada