@article{wang_yan_wu_zhang_wei_zhao_2021,  title={Using vaginal discharge score (VDS) grading system to evaluate the effect of clinical endometritis on reproductive performance of dairy cows in China},  volume={18},  ISSN={1984-3143},  url={https://doi.org/10.1590/1984-3143-AR2020-0228},  DOI={10.1590/1984-3143-AR2020-0228},  number={1},  journal={Animal Reproduction},  publisher={Colégio Brasileiro de Reprodução Animal},  author={Wang, Hongsheng and Yan, Zuoting and Wu, Xiaohu and Zhang, Yong and Wei, Yubing and Zhao, Xingxu},  year={2021},  pages={e20200228} }