👤 Luo, Qingfeng Keywords Articles (1) SARS-CoV-2 RNA more readily detected in induced sputum than in throat swabs of convalescent COVID-19 patients. 👤 Han, Huanqin 👤 Luo, Qingfeng 👤 Mo, Fan 👤 Long, Lieming 👤 Zheng, Weiqiang ⏰ 2020 📚 Lancet Infect Dis