Reuse of a Reversed "Bone Pad" to Perforate Incompletely Penetrated Burr Holes Created by Automatic-Releasing Cranial Perforators. Issue 3 (1st June 2017) - Murai, Yasuo; Ishisaka, Eitaro; Tsukiyama, Atsushi; Nakagawa, Shunsuke; Matano, Fumihiro; Tateyama, Kojiro; Morita, Akio