title: When is it appropriate to withdraw cardiac resynchronization therapy? Guesses and evidence.
authors.affiliation: National Heart & Lung Institute, Royal Brompton & Harefield Hospitals, Imperial College, London, United Kingdom. Electronic address: j.cleland@imperial.ac.uk.
authors.forename: John G F
authors.initials: JG
authors.lastname: Cleland
authors.affiliation: National Heart & Lung Institute, Royal Brompton & Harefield Hospitals, Imperial College, London, United Kingdom.
authors.forename: Charles
authors.initials: C
authors.lastname: Butcher
mesh_terms: D058406:Cardiac Resynchronization Therapy / Q000379:methods*; D006333:Heart Failure / Q000628:therapy*; D006801:Humans
keywords: CRT; LBBB; bias; bundle branch block; heart failure; mortality