Refsum Disease
In Rowland's Merritt's Textbk of Neurology, Lea & Febiger, Phila, 8thEd, p. 509, Menkes,J.H., 1989
Rigid Spine Syndrome and Rigid Spine Sign in Myopathies
J Child Neurol 4:273-282, Merlini,L.,et al, 1989
Central Core Disease, Clinical Features in 13 Patients
Medicine 66:389-396, Shuaid,A.,et al, 1987