D’Amata, Gabriele, et al. “The ‘Watch and wait’ Approach Following Chemoradiotherapy for Rectal Cancer: A Case Series and Review of Literature”. Annali Italiani Di Chirurgia, vol. 92, no. 5, Sept. 2021, pp. 531-8, https://annaliitalianidichirurgia.it/index.php/aic/article/view/2944.