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Bar graph demonstrating the genetic variants detected among study patients. Asterisks denote those that succumbed to death/cardiac transplantation during follow-up. For 9 patients, only the LQTS subtype and not the specific genetic variant was contained in the available medical record (4 KCNQ1, 4 KCNH2, 1 SCN5A)
Abbreviations. LQT, long QT
