Unsupervised machine learning with Cluster Analysis in patients with rheumatoid arthritis: insights in CV risk phenotypes from a multicentre Italian cohort - Vincenzo Venerito; Elena Bartoloni; Gian Luca Erre; Matteo Piga; Garifallia Sakellariou; Ombretta Viapiana; Andreina Manfredi; Elisa Gremese; Fabiola Atzeni; Francesca Romana Spinelli; Fabio Cacciapaglia (Internal and Emergency Medicine, 2026)