Doctors will randomly treathalf the patients with a harmless virus carrying a corrective gene. The restwill receive an inactive placebo treatment.
Previous research suggests that a protein produced by the gene can restore function to failing hearts, and reduce the risk of death and heart transplants.
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Tube and rail passengers planning to travel over Easter could be hit by major engineering projects.
Lorna McIlwaine was treating a patient who had suffered an unprovoked attack when she felt a splash of fluid fall onto her.