Chalazonitis, Athanasios N., Joannie Tzovara, and Nicolas Condilis. 2007. “Ultrasound-Guided Interventional Procedures. How We Do It”. Annali Italiani Di Chirurgia 78 (2):97-102. https://annaliitalianidichirurgia.it/index.php/aic/article/view/2696.