title: Erratum to: The clinical and cost effectiveness of group art therapy for people with non-psychotic mental health disorders: a systematic review and cost-effectiveness analysis.
authors.affiliation: School of Health and Related Research (ScHARR), University of Sheffield, Regent Court, 30 Regent Street, Sheffield, S1 4DA, UK. l.uttley@sheffield.ac.uk.
authors.forename: Lesley
authors.initials: L
authors.lastname: Uttley
authors.affiliation: School of Health and Related Research (ScHARR), University of Sheffield, Regent Court, 30 Regent Street, Sheffield, S1 4DA, UK. m.d.stevenson@sheffield.ac.uk.
authors.forename: Matt
authors.initials: M
authors.lastname: Stevenson
authors.affiliation: School of Health and Related Research (ScHARR), University of Sheffield, Regent Court, 30 Regent Street, Sheffield, S1 4DA, UK. a.scope@sheffield.ac.uk.
authors.forename: Alison
authors.initials: A
authors.lastname: Scope
authors.affiliation: School of Health and Related Research (ScHARR), University of Sheffield, Regent Court, 30 Regent Street, Sheffield, S1 4DA, UK. a.rawdin@sheffield.ac.uk.
authors.forename: Andrew
authors.initials: A
authors.lastname: Rawdin
authors.affiliation: School of Health and Related Research (ScHARR), University of Sheffield, Regent Court, 30 Regent Street, Sheffield, S1 4DA, UK. a.sutton@sheffield.ac.uk.
authors.forename: Anthea
authors.initials: A
authors.lastname: Sutton