Lu, Renfei, Jian Wang, Min Li, Jing He, Yaqi Wang, Jia Dong, and Weihua Cai. “Retrospective Quantitative Detection of SARS-CoV-2 by Digital PCR Showing High Accuracy for Low Viral Load Specimens”. The Journal of Infection in Developing Countries 16, no. 01 (January 31, 2022): 10–15. Accessed March 29, 2024. https://jidc.org/index.php/journal/article/view/35192516.