P629: THE CLL TREATMENT INFECTION MODEL – CLINICAL PROSPECTIVE VALIDATION AS PART OF THE PREVENT-ACALL TRIAL - Carsten Niemann; Mark-David Levin; Anders Österborg; Jeanette Lundin; Magdalena Kättström; Jeanette Vollerup; Caspar Da Cunha-Bang; Michael Foraux; Christian Brieghel; Fransien de Boer; Lisbeth Enggaard; Christian Bjorn Poulsen; et al. (HemaSphere, 2023)