Genetic tests for the children of parents with heart problems "can save their life", a health chief has said.
Professor Peter Weissberg, medical director at the BHF, said:
Over recent years researchers have made great strides in identifying some of the genes that cause inherited heart conditions.
A genetic test in a child of an affected parent can save their life. More research is now urgently needed to identify all the genes responsible for these deadly disorders.
Pinpointing genes which cause inherited heart conditions will allow affected children to be protected and, in the long term, will lead to new treatments to overcome the effects of the faulty gene.
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Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.
Windy this weekend with gales across northwestern parts of the UK. Rain spreading southeast.
Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."