Effects of HSV-G47∆ oncolytic virus on telomerase and telomere length alterations in glioblastoma multiforme cancer stem cells under hypoxia and normoxia conditions by Vazifehmand, Reza, Saeed Ali, Dhuha, Monem Homaie, Foroozandeh, Molaei Jalalvand, Fatemeh, Othman, Zulkefley, Deming, Chau, Stanslas, Johnson, Sekawi, Zamberi