“In Vivo Emergence of UL56 C325Y Cytomegalovirus Resistance to Letermovir in a Patient with Acute Myeloid Leukemia after Hematopoietic Cell Transplantation”, Mediterr J Hematol Infect Dis, vol. 11, no. 1, p. e2019001, Jan. 2019, doi: 10.4084/mjhid.2019.001.