Incident Hepatitis B Virus Infection after Hematopoietic Stem Cell Transplantation in Initially HBV-Seronegative Recipients: Four Cases. Mediterr J Hematol Infect Dis [Internet]. 2026 Sep. 1 [cited 2026 Sep. 2];18(1):e2026065. Available from: https://www.mjhid.org/mjhid/article/view/6442