[1] Univ Wisconsin, Sch Med & Publ Hlth, Dept Neurol Surg, 600 Highland Ave,CSC K4-828, Madison, WI 53792 USA
[2] Hosp Univ Ramon & Cajal, Dept Neurol Surg, Madrid, Spain
[3] Amer Univ, Beirut Med Ctr, Dept Surg, Beirut, Lebanon
[4] Hop Renaissance, Dept Surg, Ndjamena, Chad
[5] Caucasus Med Ctr, Dept Neurol Surg, Tbilisi, Georgia
[6] MK Shah Med Coll & Res Ctr, Dept Neurol Surg, Ahmadabad, India
[7] Istanbul Medeniyet Univ, Dept Neurosurg, Istanbul, Turkiye
[8] Respublika Diaqnostika M?rk?zi, Dept Neurosurg, Baku, Azerbaijan
[9] Univ Coll Hosp, Dept Neurol Surg, Oyo, Nigeria
[10] Bangabandhu Sheikh Mujib Med Univ, Dept Neurosurg, Dhaka, Bangladesh
[11] Lyon Neurosurg Hosp, Dept Tumoral & Vasc Neurosurg, Lyon, France
[12] Hosp Clin Univ Valencia, Dept Neurosurg, Valencia, Spain
[13] Jose R Reyes Mem Med Ctr, Dept Surg, Manila, Philippines
[14] Hosp Tengku Ampuan Afzan, Dept Neurol Surg, Pahang, Malaysia
[15] Cairo Univ, Fac Med, Dept Neurol Surg, Cairo, Egypt
[16] Univ Oklahoma, Coll Med, Dept Neurol Surg, Oklahoma City, OK USA
[17] Harvard Med Sch, Brigham & Womens Hosp, Dept Neurosurg, Boston, MA USA