HU, Ming. Retraction Notice: ARM-Net: Improved MRI brain tumor segmentation method based on attentional mechanism and residual module. EAI Endorsed Transactions on e-Learning, [S. l.], v. 11, 2026. DOI: 10.4108/eetel.12220. Disponível em: https://publications.eai.eu/index.php/el/article/view/12220. Acesso em: 1 apr. 2026.