Lu, Renfei, Jian Wang, Min Li, Jing He, Yaqi Wang, Jia Dong, and Weihua Cai. 2022. “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 (01):10-15. https://doi.org/10.3855/jidc.15315.