For citations:
Skhirtladze M.R., Timofeeva A.A., Bueverova E.L., Aladin M.N., Rzayev R.T. Abdominal Pain as First Manifestation of New Coronavirus Infection COVID-19. Russian Journal of Gastroenterology, Hepatology, Coloproctology. 2020;30(6):57-62. (In Russ.) https://doi.org/10.22416/1382-4376-2020-30-6-57-62