Giacosa, R., et al. “‘Late’ Regressions of Metastases from Renal Cancer After a Period of Disease Progression Continuing the Same Intermittent Low Dose Immunotherapy Regimen”. Acta Biomedica Atenei Parmensis, vol. 75, no. 2, Aug. 2004, pp. 126-30, https://mattioli1885journals.com/index.php/actabiomedica/article/view/2096.