Persistent Postural-Perceptual Dizziness (PPPD): A Common, Characteristic and Treatable Cause of Chronic Dizziness
Pract Neurol 18:5-13, Popkirov, S.,et al, 2018
Primary Lateral Sclerosis, Clin Features, Neuropath & Dx Criteria
Brain 115:495-520, Pringle,C.E.,et al, 1992
Neurologic Aspects of Cobalamin Deficiency
Medicine 70:229-245, Healton,E.B.,et al, 1991