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Endoscopic pictures of Zargar classification 0 to IIIB. A: Zargar Grade 0: Normal mucosa; B: Zargar Grade I: Edema and erythema of the mucosa; C: Zargar Grade IIA: Hemorrhage, erosions, blisters, superficial ulcers; D: Zargar Grade IIB: Circumferential bleeding, ulcers. Exudates; E: Zargar Grade IIIB: Focal necrosis, deep gray or brownish black ulcers; F: Zargar Grade IIIB: Extensive necrosis, deep gray or brownish black ulcers.
