title: Finding pieces of the puzzle of nonresponse to cardiac resynchronization therapy.
authors.forename: John
authors.initials: J
authors.lastname: Gorcsan
mesh_terms: D058406:Cardiac Resynchronization Therapy / Q000379:methods*; D006333:Heart Failure / Q000503:physiopathology / Q000628:therapy*; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000379:methods; D017211:Treatment Failure; D016896:Treatment Outcome