1 Department of Neurosurgery, Neurosurgery Clinic, Birgunj, Nepal. Electronic address: trozexa@gmail.com.
2 Department of Neurosurgery, Pontifical Catholic University of Paraná, Curitiba, Paraná, Brazil.
3 Department of Neurosurgery, Hospital de Clínicas, Federal University of Paraná - UFPR, Curitiba, Paraná, Brazil.
4 Department of Neurosurgery, Hannover Medical School, Hannover, Germany.
5 Department of Neurosurgery, Garibaldi Hospital, Catania, Italy.
6 Department of Neurosurgery, Cannizaro Hospital, Catania, Italy.
7 Department of Neurosurgery. School of Medicine, University of Buenos Aires, Buenos Aires, Argentina.
8 Department of Neurosurgery, Health Science Center, University of Tennessee, Memphis, Tennessee, USA.
9 Department of Neurosurgery, Oxford University, Oxford, United Kingdom.
10 Department of Neurosurgery, Medical Park Ankara Hospital, Ankara, Turkey.
11 Department of Neurohemodynamics and Neurological Endovascular Therapy, National West Medical Centre, Mexican Institute of Social Security, Torreón, Mexico.
12 Department of Neurosurgery, Astra Neurological Institute, Tamoa, Florida.
13 Department of Neurosurgery, Hama University, Hama, Syria.
14 Department of Neurosurgery, DTX Hospital, Baku, Azerbaijan.
15 Department of Neurosurgery, General Director National Center for Neurological Sciences Federal Ministry of Health Khartoum, Khartoum, Sudan.
16 Department of Neurosurgery, Military Medical Academy, Cairo, Egypt.
17 Department of Neurosurgery, Minia University, Minya, Egypt.
18 Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India.
19 Department of Neurosurgery. Hospital El Cruce Nestor Kirchner, Buenos Aires, Argentina.
20 Department of Neurosurgery. Hospital Centro Clínico del Noroeste, Unidad de Neurocirurgía y Columna Vertebral Cd Cuauhtémoc, Chihuahua, Mexico.
21 Department of Neurosurgery, University of Tennessee Health Sciences Centre, Memphis, Tennessee.