Vennila R, Hall A, Ali M, Bhuiyan N, Pirotta D, Raw DA. Remifentanil as single agent to facilitate awake fibreoptic intubation in the absence of premedication. Anaesthesia. 2011 May;66(5):368–72. doi: 10.1111/j.1365-2044.2011.06687.x. PMID: 21443641.