A multicenter, randomized, parallel-group confirmatory study protocol to evaluate the efficacy of Soft Protector CPC, a novel oral mucosal protectant, in preventing oral mucositis and alleviating pain in patients with breast cancer - Kazuhiro Omori; Kohei Furukawa; Masatoshi Usubuchi; Tomofumi Hamada; Tadahiko Shien; Michihiro Yoshida; Yuki Nakatsuka; Katsuyuki Hotta; Soichiro Ibaragi; Shogo Takashiba (PLoS ONE, 2026)