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Genetic and diagnostic characteristics of the cohort. (A) Proportion of genotypes present in the cohort. (B) Diagnostic categories according to age at first symptoms and age at diagnosis. CMS = congenital myasthenic syndromes; FCCMS = fast-channel congenital myasthenic syndrome; SCCMS = slow-channel congenital myasthenic syndrome; y = years; LE = low-expressor.
