MPS	Mucopolysaccharidosis
GAGs	Glycosaminoglycans
H/S	Hurler-Scheie
2D STE	Two-dimensional speckle-tracking echocardiography
LV	Left ventricular
ERT	Enzyme replacement therapy
GLS	Global longitudinal strain
E/A	Ratio between early and late (atrial) ventricular filling velocity
AS	Aortic stenosis
MS	Mitral stenosis
LVMI	Left ventricular mass index
IVSd	Interventricular septal end-diastolic dimension
LVPWd	Left ventricular posterior wall end-diastolic dimension
LVIDd	Left ventricular end-diastolic dimension
RWT	Relative wall thickness