title: Correction: Chronic Conditions and Sleep Problems among Adults Aged 50 years or over in Nine Countries: A Multi-Country Study.
authors.forename: Ai
authors.initials: A
authors.lastname: Koyanagi
authors.forename: Noe
authors.initials: N
authors.lastname: Garin
authors.forename: Beatriz
authors.initials: B
authors.lastname: Olaya
authors.forename: Jose Luis
authors.initials: JL
authors.lastname: Ayuso-Mateos
authors.forename: Somnath
authors.initials: S
authors.lastname: Chatterji
authors.forename: Matilde
authors.initials: M
authors.lastname: Leonardi
authors.forename: Seppo
authors.initials: S
authors.lastname: Koskinen
authors.forename: Beata
authors.initials: B
authors.lastname: Tobiasz-Adamczyk
authors.forename: Josep Maria
authors.initials: JM
authors.lastname: Haro