WANG, Biao; YANG, Chunfeng. Retraction Notice: Liver tumor segmentation method based on U-Net architecture: a review. EAI Endorsed Transactions on e-Learning, [S. l.], v. 11, 2026. DOI: 10.4108/eetel.12222. Disponível em: https://publications.eai.eu/index.php/el/article/view/12222. Acesso em: 1 apr. 2026.