Di Vita, G., et al. “Th1-Like and Th2-Like Cytokines in Patients Undergoing Open Versus Laparascopic Cholecystectomy”. Annali Italiani Di Chirurgia, vol. 72, no. 4, July 2001, pp. 485-93, https://annaliitalianidichirurgia.it/index.php/aic/article/view/1282.