Matlach J, Zindel T, Amraoui Y, Arash-Kaps L, Hennermann JB, Pitz S. Retinal and optic nerve degeneration in a-mannosidosis. Orphanet J Rare Dis. 2018 Jun 1;13(1):88. doi: 10.1186/s13023-018-0829-z. PubMed ID: 29859105