On-Line Airway Atlas
http://users.rcn.com/jsherry/airwaymap.html/

American Academy of Otolaryngology
http://www.entnet.org/

American Board of Otolaryngology
http://www.aboto.org

Archives of Otolaryngology. Head and Neck Surgery
http://archotol.ama-assn.org/

@Head and Neck
http://www.atheadandneck.com/hn/

Health Hearing. The World Leader in Hearing Information
http://www.searchwave.com/search/searchwave.cgi/

Otorhinolaryngolical Research Society
http://www.rcsed.ac.uk/ORS/

Sociedad Española de Otorrinolaringología y Patología Cérvico - Facial
http://www.seorl.org/

The Merck Manual of Diagnosis and Therapy. Ear, Nose and Throat Disorders
http://www.merck.com/pubs/mmanual/section7/sec7.htm/