[1] Dartmouth Hitchcock Med Ctr, Sect Neurosurg, One Med Ctr Dr, Lebanon, NH 03756 USA
[2] Univ Texas Austin, Dept Neurosurg, Dell Med Sch, Austin, TX 78712 USA
[3] Univ Texas Austin, Mulva Clin Neurosci, Dell Med Sch, Austin, TX 78712 USA
[4] Carolinas Healthcare Syst, Levine Canc Inst, Southeast Radiat Oncol Grp, Charlotte, NC USA
[5] George Washington Univ, Dept Neurosurg, Washington, DC USA
[6] Henry Ford Hlth Syst, Dept Neurosurg, Detroit, MI USA
[7] Emory Univ, Sch Med, Dept Neurosurg, Atlanta, GA USA