@article{du_du_wang_hu_qiao_shi_2022,  title={Clinical analysis on the influencing factors related to preterm twin pregnancy},  volume={68},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.20220447},  DOI={10.1590/1806-9282.20220447},  number={12},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Du, Lijuan and Du, Xiuping and Wang, Wenjuan and Hu, Liyan and Qiao, Cuifeng and Shi, Ru},  year={2022},  pages={1651–1656} }