title: An open letter to the sleep and circadian rhythms community: presidents' viewpoints of the World Sleep Federation (WSF).
authors.forename: Ronald R
authors.initials: RR
authors.lastname: Grunstein
authors.forename: Clete A
authors.initials: CA
authors.lastname: Kushida
mesh_terms: D002940:Circadian Rhythm; D006801:Humans; D012890:Sleep; D012955:Societies, Medical / Q000331:legislation & jurisprudence / Q000458:organization & administration* / Q000592:standards; D012958:Societies, Scientific / Q000331:legislation & jurisprudence / Q000458:organization & administration* / Q000592:standards