Higher radiation doses after partial laryngectomy may raise the incidence of pneumonia: A retrospective cohort study oleh Guoqi Lv, Guoqi Lv, Xiuling Wu, Xiuling Wu, Zhengying Wang, Zhengying Wang, Kanglong Wu, Kanglong Wu, Geer Ang, Geer Ang, Shulin Cui, Shulin Cui, Yuqi Shi, Yuqi Shi, Yu Wang, Yu Wang, Delong Liu