Gan, Wen-tao, Meng-Yun Zhou, Yong-ran Cheng, Lan Ye, Juan Chen, Ming-Wei Wang, and Zhan-hui Feng. “Air Quality and the COVID-19 Outbreak in China”. Allergologia et Immunopathologia 49, no. 1 (January 2, 2021): 165–167. Accessed May 1, 2026. https://all-imm.com/index.php/aei/article/view/66.