ML II	Mucolipidosis type II
EC	Enzyme Commission number
M6P	mannose 6-phosphate
DBS	Dry Blood Spot
WES	whole-exome sequencing
HS	Heparan sulfate
DS	Dermatan sulfate
LC-MS/MS	Liquid Chromatography-Mass Spectrometry
PTH	Parathyroid Hormone
DUS	Dried urine Spot
ASMD	Acid sphingomyelinase
IDUA	α-Iduronidase
IDS	Iduronate-2-sulfatase
NAGLU	α-N-acetylglucosaminidase
ARSB	Arylsulfatase B
GUSB	β-Glucuronidase
GALC	Galactocerebrosidase
GAA	α-Glucosidase
GLA	α-Galactosidase
GBA	β-Glucosidase
GALNS	Galactose-6-sulfatase
GLB1	β-Galactosidase
HN	Healthy Neonates
MDPI	Multidisciplinary Digital Publishing Institute
DOAJ	Directory of open access journals
TLA	Three letter acronym