1. Coronavirus COVID-19 (2019-nCoV). Coronavirus COVID-19 glob cases by;Johns Hopkins;Johns Hopkins CSSE,2020
2. Clinical characteristics of 3,062 COVID-19 patients: a meta-analysis;Zhu;J Med Virol,2020
3. Gastrointestinal symptoms and COVID-19: case-control study from the United States;Nobel;Gastroenterology,2020
4. Novel coronavirus patients’ clinical characteristics, discharge rate and fatality rate of meta-analysis;Li;J Med Virol,2019
5. Evidence for gastrointestinal infection of SARS-CoV-2;Xiao;Gastroenterology,2020