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Prolonged QT interval
- What Are the Symptoms of Rett Syndrome?
(Eunice Kennedy Shriver National Institute of Child Health and Human Development) Rett Syndrome/Symptoms ... Rett Syndrome ... The first symptom of Rett syndrome is usually the loss of muscle tone, called hypotonia. With hypotonia, an infant's ...
(Eunice Kennedy Shriver National Institute of Child Health and Human Development) 