Excessive daytime sleepiness in Parkinson’s disease as assessed by Epworth Sleepiness Scale (ESS) Excessive daytime sleepiness in Parkinson's disease as assessed by Epworth Sleepiness Scale (ESS) Download Erratum to “Spindle frequency remains slow in sleep apnea patientsthroughout the night”: [Sleep Med 4 (2003) 229–234] 1-Identification and evaluation of obstructive sleep apnea prior to adenotonsillectomy in children: a survey of practice patterns