Chen, Gong-Qi, Wen-Tao Luo, Chao-Hui Zhao, Chun-Na Li, Zhong-Si Hong, Jin-Yu Xia, and Xi Liu. 2020. “Comparison of Clinical Characteristics Between fecal/Perianal Swab Nucleic Acid-Positive and -Negative Patients With COVID-19”. The Journal of Infection in Developing Countries 14 (08), 847-52. https://doi.org/10.3855/jidc.12885.