1. American Academy of Otolaryngology – Head and Neck Surgery, Bell's Palsy. http://www.entnet.org/HealthInformation/bellsPalsy.cfm
2. Bell's Palsy Information Site: http://www.bellspalsy.ws/
3. National Institute of Neurological Disorders and Stroke, Bell's Palsy Information. http://www.ninds.nih.gov/disorders/bells/bells.htm
4. Bell's palsy: a review of treatment using antiviral agents;Alberton;Ann. Pharmacother.,2006
5. Prednisolone in Bell's palsy related to treatment start and age;Axelsson;Otol. Neurotol.,2011