Thickness	Affected arm	Unaffected arm	P-value
Muscle	Proximal	2.01 (0.63)	2.12 (0.55)	0.025*
Distal	0.92 (0.37)	1.04 (0.35)	0.037*
Subcutaneous tissue	Proximal	0.87 (0.37)	0.54 (0.49)	0.016*
Distal	0.67 (0.22)	0.49 (0.42)	0.02*