Chalazonitis, Athanasios N., et al. “First Sternocostal Degenerative Arthritis With Intrarticular Fluid Collection. A Case Report”. Annali Italiani Di Chirurgia, vol. 77, no. 6, Nov. 2006, pp. 529-32, https://annaliitalianidichirurgia.it/index.php/aic/article/view/3074.