Neuronavigation-guided focused ultrasound (NaviFUS) for transcranial blood-brain barrier opening in recurrent glioblastoma patients: clinical trial protocol - Chen, Ko-Ting; Lin, Ya-Jui; Chai, Wen-Yen; Lin, Chia-Jung; Chen, Pin-Yuan; Huang, Chiung-Yin; Kuo, John S.; Liu, Hao-Li; Wei, Kuo-Chen (Annals of Translational Medicine, 2020)