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Letters to the editor
Prolonged QTc interval as an important factor in sudden infant death syndrome
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Editor,—Dr Davies’s comments on the relation between QT prolongation and sudden infant death1 are based on accepting the report by Schwartz et al at face value.2 In that paper 9725 of 34 442 ECGs recorded over 19 years were analysed. Twenty four infants had unexplained sudden death and their ECGs were analysed retrospectively to show …