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Fitzek MM, Thornton AF, Rabinov JD, Lev MH, Pardo FS, Munzenrider JE, Okunieff P, Bussière M, Braun I, Hochberg FH, Hedley-Whyte ET, Liebsch NJ, Harsh GR 4th.Fitzek MM, et al. Among authors: hochberg fh.J Neurosurg. 1999 Aug;91(2):251-60. doi: 10.3171/jns.1999.91.2.0251.J Neurosurg. 1999.PMID: 10433313Clinical Trial.