| Affiliation: | 1. Health Research Methodology, Department of Clinical Epidemiology & Biostatistics, McMaster University, 1280 Main Street W, Hamilton, ON L8S 4L8, Canada;2. Stanford University and Premier Plastic Surgery, 1795 El Camino Real, Suite 200, Palo Alto, CA 94306, USA;1. Stanford Head and Neck Anesthesia, Advanced Airway Management Program, Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, CA 94305, USA;2. Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, CA 94305, USA |
