Cite
MLA Citation
Fenghua Xu et al.. “Esophagogastroduodenoscopy procedure using disposable endoscope to detect the cause of melena in a patient with COVID‐19.” Digestive endoscopy, vol. 33, no. 1, 2021, pp. e1–e2. http://access.bl.uk/ark:/81055/vdc_100118932031.0x000036