[1] Tribhuvan Univ Teaching Hosp, Inst Med, Dept Radiol & Imaging, Kathmandu, Nepal
[2] Tribhuvan Univ, Inst Med, Maharajgunj Med Campus, Kathmandu, Nepal
[3] Coll Med Sci, Bharatpur, Nepal
[4] Gandaki Med Coll, Pokhara, Nepal
[5] Tribhuvan Univ Teaching Hosp, Inst Med, Dept Neurosurg, Kathmandu, Nepal
[6] Virginia Tech, Dept Neurosurg, Carilion Sch Med, Roanoke, VA USA
[7] Virginia Mason Franciscan Hlth, Seattle, WA USA
[8] Tribhuvan Univ Teaching Hosp, Inst Med, Dept Radiol & Imaging, Kathmandu 44600, Nepal