[1] Hadassah Hebrew Univ, Med Ctr, Lab Expt Surg, Jerusalem, Israel
[2] Hebrew Univ Jerusalem, Fac Med, Jerusalem, Israel
[3] Johns Hopkins Univ, Sch Med, Dept Anesthesiol & Crit Care Med, Baltimore, MD USA
[4] Johns Hopkins Univ, Sch Med, Dept Neurol Surg, Baltimore, MD USA
[5] Hadassah Univ Hosp, Lab Expt Surg, IL-91240 Jerusalem, Israel