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Marks ML, Trippel DL, Keating MT (October 1995). "Long QT syndrome associated with syndactyly identified in females". The American Journal of Cardiology. 76 (10): 744–745. doi:10.1016/S0002-9149(99)80216-1. PMID7572644.
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Marks ML, Whisler SL, Clericuzio C, Keating M (January 1995). "A new form of long QT syndrome associated with syndactyly". Journal of the American College of Cardiology. 25 (1): 59–64. doi:10.1016/0735-1097(94)00318-K. PMID7798527.
Marks ML, Trippel DL, Keating MT (October 1995). "Long QT syndrome associated with syndactyly identified in females". The American Journal of Cardiology. 76 (10): 744–745. doi:10.1016/S0002-9149(99)80216-1. PMID7572644.