Clinical data on DM patients used in this study.

aMedical Research Council, scale for muscle strength; scale (0–5 grade) on 15 muscles at both sides in the upper and lower limbs for a total of 150 maximum score. bElectrocardiogram, included first-degree atrio-ventricular block, incomplete or complete bundle-branch block. cMuscle Impairment Rating Scale, stage of the disease for DM1 patients [73].