Retinitis Pigmentosa
Surv Ophthalmol 33:137-177, Pagon,R.A., 1988
X Linked Adrenoleukodystrophy:Clinical Presentation, Diagnosis, and Therapy
JNNP 63:4-14, vanGeel,B.M.,et al, 1997
Refsum Disease
In Rowland's Merritt's Textbk of Neurology, Lea & Febiger, Phila, 8thEd, p. 509, Menkes,J.H., 1989