Sleep Medicine
Volume 9, Issue 7 , Pages 712-714, October 2008

Excessive daytime sleepiness in sleep apnea: It is not just apnea hypopnea index

Sleep Research and Treatment Center, Department of Psychiatry H073, Penn State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA. Tel.: +1 717 531 7278; fax: +1 717 531 6491

Received 15 April 2008; accepted 5 May 2008.

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PII: S1389-9457(08)00108-1

doi:10.1016/j.sleep.2008.05.001

Sleep Medicine
Volume 9, Issue 7 , Pages 712-714, October 2008