HVI	Hand volume index
HMSI	Hand muscle strength index
NCV	Nerve conduction velocity
ENG	Electroneurography
MNCS_APA	Motor Nerve Conduction Study—Action Potential Amplitude
MNCS_APAA	Motor Nerve Conduction Study—Action Potential Amplitude Assessment
SUM	Medical University of Silesia
kDa	kilo Daltons
NGF	Nerve growth factor
BDNF	Brain-derived neurotropic factor
CNTF	Ciliary neurotrophic factor
IGF-I	Insulin-like growth factor 1
IGF-II	Insulin-like growth factor 2
S-100	Family of multigenic group of nonubiquitous cytoplasmic homologous intracellular Ca2+ binding proteins with EF hand motifs and significant structural similarities at both protein and genomic levels
PLP	Proteolipid proteins