Neonatal alloimmune thrombocytopenia caused by anti-HPA antibodies in pregnant Chinese women: a study protocol for a multicentre, prospective cohort trial oleh Li Chen, Zhiwei Liu, Tiemei Liu, Xianjun Ma, Meiying Rao, Yongjun Wang, Bo Sun, Wen Yin, Jun Zhang, Beizhan Yan, Xiaojuan Li, Qiushi Wang, Lei Zhang, Jun Wen, Fenghua Liu, Peng Wang, Yaming Wei, Yuanshuai Huang, Jiang Wu, Yi Guo, Yinlan Kang, Xiaochuan Song, Xiangfu Liu, Genling Zhang, Tingting Xie, Yonggeng Chen, Xiaojing Zeng, Zhongjun Li