title: Care.data must become an opt-in system, say doctors.
authors: BMJ Careers.
authors: Tom
authors: T
authors: Moberly
mesh_terms: D001291:Attitude of Health Personnel; D016494:Computer Security; D003219:Confidentiality; D057286:Electronic Health Records; D006801:Humans; D010817:Physician-Patient Relations; D035502:Trust