Fig. 2From: A 13-year follow-up of Finnish patients with Salla diseaseRate of change in developmental age during the 13-year follow-up. The rate of change in motor (a) or mental (b) developmental age was calculated per year of follow-up. Data at the baseline visit were obtained from [7]. Values are plotted at the midpoint between the age at baseline and that at the follow-up visitBack to article page