Saponins from Chinese Buckeye Seed Reduce Cerebral Edema: Metaanalysis of Randomized Controlled Trials - Zhou, Yong; Hui, Xuhui; Li, Ni; Zhuang, Wen; Liu, Guanjian; Wu, Taixiang; Wei, Maoling; Wu, Xiaoting (Planta Medica, 2005)