Serventi, Alberto, Pier Carlo Rassu, Eliana Giaminardi, Andrea Massobrio, Giulio Cesare Vitali, and Lorenzo Stabilini. 2011. “Haemorrhoidal Disease: Role of Conservative Outpatient Treatments”. Annali Italiani Di Chirurgia 82 (5):341-47. https://annaliitalianidichirurgia.it/index.php/aic/article/view/2812.