title: The study of NOELs.
authors.forename: John C
authors.initials: JC
authors.lastname: Clifford
mesh_terms: D001887:Boredom; D003020:Clothing; D004502:Education, Medical, Continuing / Q000592:standards*; D006801:Humans; D010820:Physicians; D012026:Reflex, Stretch; D012890:Sleep; D014925:Wit and Humor as Topic