Correspondence to. Dr S ▇▇▇▇▇▇▇▇▇▇, Department of Cardiology, ▇▇▇▇▇▇▇ Hospital, ▇▇▇▇▇▇▇ ▇▇▇▇, ▇▇▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇ ▇▇▇ ▇▇▇, ▇▇; ▇▇▇▇▇▇▇▇▇▇▇@▇▇▇▇▇▇▇.▇▇▇. uk Submitted 20 February 2005 Accepted 6 April 2005
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Sources: Research Article, Research Article