title: Sleep Problems in Parkinson's Disease.
authors.affiliation: Department of Neurology, Dokkyo Medical University, Tochigi 321-0293, Japan.
authors.forename: Koichi
authors.initials: K
authors.lastname: Hirata
authors.affiliation: Department of Neurology, Innsbruck Medical University, Innsbruck, Austria.
authors.forename: Birgit
authors.initials: B
authors.lastname: Högl
authors.affiliation: Department of Neurology, Singapore General Hospital, Singapore.
authors.forename: Eng King
authors.initials: EK
authors.lastname: Tan
authors.affiliation: Department of Neurology, Massachusetts General Hospital, Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA.
authors.forename: Aleksandar
authors.initials: A
authors.lastname: Videnovic