Acute Upper Airway Obstruction.

N Engl J Med

November 2019

From the Department of Otolaryngology-Head and Neck Surgery/Surgical Oncology (A.E., J.R.A., J.C.I.) and the Institute for Health Policy Management and Evaluation (A.E., J.R.A.), University of Toronto, Sunnybrook Health Sciences Centre and Michael Garron Hospital (A.E.), the Institute for Clinical Evaluative Sciences (A.E.), and Princess Margaret Cancer Centre (J.R.A., J.C.I.) - all in Toronto.