Proton Beam Therapy in Combination with Intra-Arterial Infusion Chemotherapy for T4 Squamous Cell Carcinoma of the Maxillary Gingiva. - Endo, Hiromasa; Takayama, Kanako; Mitsudo, Kenji; Nakamura, Tatsuya; Seto, Ichiro; Yamaguchi, Hisashi; Ono, Takashi; Suzuki, Motohisa; Azami, Yusuke; Wada, Hitoshi; Murakami, Masao; Tohnai, Iwai (Cancers, 2018)