Determination of Gemcitabine in Plasma of Bladder Cancer Patients by Hydrophilic Interaction Chromatography with Ultraviolet Detection. - Wang, Meng; Hiraki, Ryoichi; Nakamura, Norihiro; Hayama, Tadashi; Yasuda, Takuji; Miyata, Yasuyoshi; Sakai, Hideki; Nakashima, Mihoko N; Nakashima, Mikiro; Ohyama, Kaname (Journal of Chromatographic Science, 2020)