| Affiliation: | 1. Department of Pediatrics, Arizona Respiratory Center, University of Arizona, 1501 North Campbell Avenue, Tucson, AZ, USA;2. Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, Arizona Respiratory Center, University of Arizona, 1501 North Campbell Avenue, Tucson, AZ, USA;3. Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, Department of Medicine, Arizona Respiratory Center, University of Arizona, 1501 North Campbell Avenue, Room 2342D, Tucson, AZ 85724, USA;1. Department of Speech and Hearing Sciences, Portland State University (PSU), PO Box 751, Portland, OR 97207, USA;2. Department of Otolaryngology–Head & Neck Surgery, Oregon Health & Science University (OHSU), Northwest Clinic for Voice and Swallowing, Physician''s Pavilion 250/PV01, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA;3. Department of Neurology, Oregon Health & Science University (OHSU), Hatfield Research Center, 12D44A/CH8C, 3181 Southwest Sam Jackson Park Road, Portland, OR 97239, USA |
