Parmeggiani, Domenico, et al. “Abdominal Hypertension and Venous Insufficiency of Lower Limbs: Is There a Relationship?”. Annali Italiani Di Chirurgia, vol. 84, no. 1, Jan. 2013, pp. 67-72, https://annaliitalianidichirurgia.it/index.php/aic/article/view/1034.