title: Author reply: To PMID 24068445.
authors.affiliation: International Centre for Circulatory Health, National Heart and Lung Institute, Imperial College London, 59-61 North Wharf Road, London W2 1LA, UK siana.jones@imperial.ac.uk.
authors.forename: Siana
authors.initials: S
authors.lastname: Jones
authors.affiliation: International Centre for Circulatory Health, National Heart and Lung Institute, Imperial College London, 59-61 North Wharf Road, London W2 1LA, UK.
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Shun-Shin
authors.affiliation: International Centre for Circulatory Health, National Heart and Lung Institute, Imperial College London, 59-61 North Wharf Road, London W2 1LA, UK.
authors.forename: Graham D
authors.initials: GD
authors.lastname: Cole
authors.affiliation: International Centre for Circulatory Health, National Heart and Lung Institute, Imperial College London, 59-61 North Wharf Road, London W2 1LA, UK.
authors.forename: Zachary I
authors.initials: ZI
authors.lastname: Whinnett
authors.affiliation: International Centre for Circulatory Health, National Heart and Lung Institute, Imperial College London, 59-61 North Wharf Road, London W2 1LA, UK.
authors.forename: Darrel P
authors.initials: DP
authors.lastname: Francis
mesh_terms: D058406:Cardiac Resynchronization Therapy; D058409:Cardiac Resynchronization Therapy Devices; D015150:Echocardiography, Doppler; D005260:Female; D006329:Heart Conduction System / Q000000981:diagnostic imaging*; D006333:Heart Failure / Q000000981:diagnostic imaging* / Q000628:therapy*; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000000981:diagnostic imaging*