title: [Quality of sleep in middle school teachers].
authors.forename: Gang
authors.initials: G
authors.lastname: Cheng
authors.forename: Xiao-qing
authors.initials: XQ
authors.lastname: Zhang
authors.forename: Mian-zhen
authors.initials: MZ
authors.lastname: Wang
mesh_terms: D000328:Adult; D005178:Faculty; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012494:Sampling Studies; D012890:Sleep; D011795:Surveys and Questionnaires; D055815:Young Adult