Links
[1] http://ghr.nlm.nih.gov/gene/PMM2
[2] https://disorders.eyes.arizona.edu/references/retinal-characteristics-congenital-disorder-glycosylation-pmm2-cdg
[3] https://disorders.eyes.arizona.edu/references/ophthalmological-abnormalities-children-congenital-disorders-glycosylation-type-i
[4] https://disorders.eyes.arizona.edu/references/early-ocular-manifestations-infant-carbohydrate-deficient-glycoprotein-syndrome-type-ia
[5] https://disorders.eyes.arizona.edu/references/full-field-electroretinograms-patients-carbohydrate-deficient-glycoprotein-syndrome
[6] https://disorders.eyes.arizona.edu/references/ocular-pathology-disialotransferrin-developmental-deficiency-syndrome