Effects of three rehydration methods on prevention of on-site and delayed blood donation-related vasovagal responses: a cluster-randomized trial Journal title: Chinese Journal of Blood Transfusion Authors: Guiyun XIE, Shijie LI, Jian OUYANG, Fanfan FENG, Xiaoxiao ZHENG, Zhiyu ZHOU, Lianfang MAI, Jinyan CH... Subject(s): Hematology