Refsum Disease
In Rowland's Merritt's Textbk of Neurology, Lea & Febiger, Phila, 8thEd, p. 509, Menkes,J.H., 1989
Retinitis Pigmentosa
Surv Ophthalmol 33:137-177, Pagon,R.A., 1988
Inborn Errors of Metabolism as a Cause of Neurological Disease in Adults: An Approach to Investigation
JNNP 69: 5-12, Gray,R.G.F. et al, 2000