Acute esophageal necrosis (black esophagus) with active upper gastrointestinal bleeding: What to do? - Ribeiro, Igor Braga; Luz, Gustavo de Oliveira; de Souza, Gabriel Mayo Vieira; Boghossian, Mateus Bond; do Monte Junior, Epifânio Silvino; dos Santos, Marcos Eduardo Lera; de Moura, Eduardo Guimarães Hourneaux (Endoscopy, 2021)