1. School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154007, P.R. China
2. Department of Hematology, Shenzhen Yantian District People's Hospital, Shenzhen, Guangdong 518081, P.R. China
3. Department of Anesthesiology, The First Affiliated Hospital of Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China