Sangiorgio, Giuseppe, et al. “Flat Patch Mesh Versus Three-Dimensional Mesh (plug) for Open Umbilical or Epigastric Hernia Repair. A Retrospective Study”. Annali Italiani Di Chirurgia, vol. 94, no. 5, Sept. 2023, pp. 512-7, https://annaliitalianidichirurgia.it/index.php/aic/article/view/390.