Degenerative Diseases of the Nervous System, Progressive Supranuclear Palsy
Adams & Victors Principles of Neurology, Chp 39, pg 1096, Ropper, A.H.,et al, 2014
The Sit-up Test:An Alternative Clinical Test for Evaluating Pediatric Torticollis
Pediatrics 90:612-615, Caputo,A.R.,et al, 1992