Low molecular weight heparin and 28-day mortality among patients with coronavirus disease 2019: A cohort study in the early epidemic era

Wei Qin, Fen Dong, Zhu Zhang, Bingzhu Hu, Shi Chen, Ziyang Zhu, Fajiu Li, Xiaojiang Wang, Yunxia Zhang, Yimin Wang, Kaiyuan Zhen, Jing Wang, Ismaı̈l Elalamy, Chenghong Li, Zhenguo Zhai, Bruce L. Davidson, Chen Wang