http://emedicine.medscape.com/article/295807-overview obstructive sleep apnea http://emedicine.medscape.com/article/295807-overview Obstructive Sleep Apnea. http://emedicine.medscape.com/article/295807-overview http://emedicine.medscape.com/article/295807-overview Obstructive Sleep Apnea obstructive sleep apnea http://emedicine.medscape.com/article/295807-overview http://emedicine.medscape.com/article/295807-overview