Endovascular EEG device prospective multicenter single-arm clinical trial to confirm efficacy and safety performance on patients with Intractable Epilepsy: The EPSILON IE trial protocol - Yuji Matsumaru; Ayataka Fujimoto; Yosuke Masuda; Hisayuki Hosoo; Kota Araki; Aiki Marushima; Kensuke Kawai; Hiroki Ishida; Koichi Hashimoto; Ryota Ishii; Bryan J. Mathis; Eiichi Ishikawa (PLoS ONE, 2025)