Busulfan conditioning and prognostic impact of jaundice in late-onset sinusoidal obstruction syndrome following allogeneic hematopoietic cell transplantation.

Competing Interests: Competing interests: The authors declare no competing interests. Ethics approval: All procedures performed in the study was in accordance with the ethical standards of the institutional and national research committee and with the Declaration of Helsinki in 1964 and its later amendments or comparable ethical standards. The Institutional Review Board of Toranomon Hospital approved this study (approval number, 1939). Patient consent: An opt-out consent approach was permitted for this study in accordance with ethical guidelines for observational studies using existing data, and patients who declined registration were excluded.