title: A systematic review of faces scales for the self-report of pain intensity in children.
authors.affiliation: Child Health Evaluative Services, Hospital for Sick Children, Toronto, Ontario, Canada. deborah.tomlinson@sickkids.ca
authors.forename: Deborah
authors.initials: D
authors.lastname: Tomlinson
authors.forename: Carl L
authors.initials: CL
authors.lastname: von Baeyer
authors.forename: Jennifer N
authors.initials: JN
authors.lastname: Stinson
authors.forename: Lillian
authors.initials: L
authors.lastname: Sung