Massimo Chiaretti, Danilo Alunni Fegatelli, Giancarlo Ceccarelli, Giovanna Angela Carru, Giuseppe Pappalardo, and Annalisa Italia Chiaretti. 2018. “Comparison of Flavonoids and Centella Asiatica for the Treatment of Chronic Anal Fissure. A Randomized Clinical Trial”. Annali Italiani Di Chirurgia 89 (4):330-36. https://annaliitalianidichirurgia.it/index.php/aic/article/view/1112.