1. Strategy for the practice of digestive and oncological surgery during the Covid-19 epidemic;Tuech;J Visc Surg,2020
2. Surgery and the Covid-19 epidemic: some additional precautions;Canis;J Visc Surg,2020
3. Centers for disease control and prevention. Interim clinical guidance for management of patients with confirmed Coronavirus disease (COVID-19). In: https://www.cdc.gov/coronavirus/2019-ncov/hcp/clinical-guidance-management-patients.html#lab-findings. Accessed 15 April 2020.
4. Centers for disease control and prevention. Asymptomatic and presymptomatic SARS-CoV-2 infections in residents of a long-term care skilled nursing facility — King County, Washington, March 2020. In: https://www.cdc.gov/mmwr/volumes/69/wr/pdfs/mm6913-H.pdf. Accessed 15 April 2020.
5. Guidelines for laboratory diagnosis of coronavirus disease 2019 (COVID-19) in Korea;Hong;Ann Lab Med,2020