Chinello, M. et al. 2020. Chronic-graft-versus-host-disease-related polymyositis: a 17-months-old child with a rare and late complication of haematopoietic stem cell transplantation. Mediterranean Journal of Hematology and Infectious Diseases. 12, 1 (Jan. 2020), e2020002. DOI:https://doi.org/10.4084/mjhid.2020.002.