Sarcoidosis of the Nervous System, A Clinical Approach
Arch Int Med 151:1317-1321, Sharma,Om.P.&Sharma,A.D., 1991
Whipple'sDisease & the Nervous System-The Neurology of GI Disease
1974, Chapter 13, p. 207 Major Prob. In Neurology Vol. 3-Saunders., Pallis,C.A.&Lewis,P.D., 1974