Errata: Measuring Disease Severity in Duchenne and Becker Muscular Dystrophy

Reports an error in Davis et al. (2010). The functional motor scale used in Davis et al. (2010) was the EK (Egen Klassifikation) Scale, rather than the Amyotrophic Lateral Sclerosis Functional Rating Scale (Steffensen et al., 2002; Cedarbaum & Stambler, 1997). Both scales are 10-item, disease-specific measures that assess mobility and respiratory function in individuals with progressive muscle weakness. This error does not change the conclusions.