External quality assessment of laboratories in blood stations of Hebei Province in 2022: a retrospective analysis of HeBEQA project Journal title: Chinese Journal of Blood Transfusion Authors: Ying CHANG, Xiaotong ZHANG, Zixuan ZHANG, Qinghua TIAN, Song LI, Shaoling YANG, Yu KANG, Lixia CHEN,... Subject(s): Hematology