title: Erratum to: 'Effectiveness and cost-effectiveness of a patient-initiated botulinum toxin treatment model for blepharospasm and hemifacial spasm compared to standard care: study protocol for a randomised controlled trial'.
authors.affiliation: Centre for Health Services Research, School of Health Sciences, City University London, London, UK.|Moorfields Eye Hospital, London, UK.
authors.forename: Sadie
authors.initials: S
authors.lastname: Wickwar
authors.affiliation: Centre for Health Services Research, School of Health Sciences, City University London, London, UK.|Community Health Newham, East London Foundation Trust, London, UK.
authors.forename: Hayley
authors.initials: H
authors.lastname: McBain
authors.affiliation: Centre for Health Services Research, School of Health Sciences, City University London, London, UK.
authors.forename: Stanton P
authors.initials: SP
authors.lastname: Newman
authors.affiliation: Centre for Health Services Research, School of Health Sciences, City University London, London, UK.
authors.forename: Shashivadan P
authors.initials: SP
authors.lastname: Hirani
authors.affiliation: Centre for Health Services Research, School of Health Sciences, City University London, London, UK.
authors.forename: Catherine
authors.initials: C
authors.lastname: Hurt
authors.affiliation: Moorfields Eye Hospital, London, UK.
authors.forename: Nicola
authors.initials: N
authors.lastname: Dunlop
authors.affiliation: Centre for Health Services Research, School of Health Sciences, City University London, London, UK.
authors.forename: Chris
authors.initials: C
authors.lastname: Flood
authors.affiliation: Moorfields Eye Hospital, London, UK. d.ezra@ucl.ac.uk.
authors.forename: Daniel G
authors.initials: DG
authors.lastname: Ezra