D. Proposito, R. Gramolini, V. Corazza, B. Mancini, S. Gallina, L. Montemurro, S. Veltri, and M. Carboni. 2002. “OBJECTIVES OF A BLOODLESS SURGERY PROGRAM. COMPARATIVE STUDY (MAJOR SURGERY VS MINOR-MEDIUM SURGERY) ON FIFTY-ONE JEHOVAH’S WITNESS PATIENTS”. Annali Italiani Di Chirurgia 73 (2):197-210. https://annaliitalianidichirurgia.it/index.php/aic/article/view/347.