PB1936: PAROXYSMAL NOCTURNAL HEMOGLOBINURIA AND THROMBOSIS: A MULTICENTRIC RETROSPECTIVE STUDY. (23rd June 2022) - Chatzileontiadou, S.; Loutsidi, N.-E.; Asimakopoulos, I.; Chatzikonstantinou, T.; Zikos, P.; Bouchla, A.; Bezirgiannidou, Z.; Kouvata, E.; Apsemidou, A.; Frouzaki, C.; Hatjiharissi, E.; Chaloudis, P.; et al.