🔗 Upper respiratory tract Articles (1) [Which sampling method for the upper respiratory tract specimen should be taken to diagnose patient with COVID-19?] 👤 Ye, B 👤 Fan, C 👤 Pan, Y 👤 Ding, R 👤 Hu, H X 👤 Xiang, M L ⏰ 2020 📚 Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi