Successful EGFR Mutation Detection in Cytological Specimens of Lung Cancer with Challenging Biopsies by Integrating Virtual Bronchoscopy Navigation and Endobronchial Ultrasound Gui... oleh Yasuhiro Umeyama, Hiroshi Soda, Hiroaki Senju, Ryosuke Ogata, Mizuki Iwanaga, Hiroko Hayashi, Hirokazu Taniguchi, Shinnosuke Takemoto, Takahiro Takazono, Noriho Sakamoto, Yuichi Fukuda, Hiroshi Mukae