Laryngoscopy. Nemours Kids Health website. Available at:
http://kidshealth.org/parent/system/surgery/laryngoscopy.html. Updated March 2013. Accessed May 23, 2014.
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http://www.netdoctor.co.uk/surgical-procedures/laryngoscopy-and-biopsy.htm. Updated July 6, 2009. Accessed May 23, 2014.
American Academy of Otolaryngology—Head and Neck Surgery
American Cancer Society
Canadian Digestive Health Foundation