@article{Li_2021,<br/><span class="tab"></span> title={Air Emergency Transport under COVID-19: Impact,<br/><span class="tab"></span> Measures,<br/><span class="tab"></span> and Future},<br/><span class="tab"></span> volume={2021},<br/><span class="tab"></span> ISSN={0197-6729},<br/><span class="tab"></span> url={http://dx.doi.org/10.1155/2021/5560994},<br/><span class="tab"></span> DOI={10.1155/2021/5560994},<br/><span class="tab"></span> journal={Journal of Advanced Transportation},<br/><span class="tab"></span> publisher={Hindawi Limited},<br/><span class="tab"></span> author={Li,<br/><span class="tab"></span> Zhun},<br/><span class="tab"></span> editor={Wang,<br/><span class="tab"></span> Yong},<br/><span class="tab"></span> year={2021},<br/><span class="tab"></span> month=sep,<br/><span class="tab"></span> pages={1–14} }