Myelopathy Caused by Nitrous Oxide Toxicity
AJNR 19:894-896, 9941998., Pema,P.J.,et al, 1998
Treatment of Advanced Parkinson's Disease by Posterior GPi Pallidotomy:1-Year Results of a Pilot Study
Ann Neurol 40:355-366, 3411996., Baron,M.S.,et al, 1996