Fig. 2
From: Phenotypic variation between siblings with Metachromatic Leukodystrophy
Disease progression (of gross motor function). Progression of gross motor function (GMFC-MLD levels 1 to 6) of children with late-infantile (left) and juvenile (right) MLD; box plots shows distribution of non-related children with MLD within each level, siblings are marked by colored lines; note: GMFC-MLD is only applicable after the age of 18 months (=90th percentile of walking) [3]