Nanjing Med Univ, Affiliated Hosp 1, Dept Neurosurg, Nanjing 210029, Peoples R China;
NCI, Ctr Canc Res, Lab Receptor Biol & Gene Express, N1H, Bethesda, MD 20892 USA. Tianjin Med Univ, Gen Hasp, Dept Neurosurg, Tianjin 300052, Peoples R China;
Univ Maryland, Sch Med, VA Maryland Hlth Care Syst, MS Ctr Excellence East, Baltimore, MD 21201 USA;
Univ Maryland, Sch Med, Dept Neurol, Baltimore, MD 21201 USA;