Note: Funding Information: The BSH General Haematology Task Force members at the time of writing this good practice paper were Mamta Garg, Charlotte Bradbury, Emmy Dickens, Savio Fernandes, John Grainger, Ciaran Mooney, Noémi Roy, Barbara Delasalle, Nicola Svenson, Sara Stuart-Smith and Suzanne Docherty. The authors would like to thank them, the BSH sounding board, and the BSH guidelines committee for their support in preparing this good practice paper. The authors would also like to thank the EHA Guidelines Committee as well as EHA Executive Office for their support in preparing and publishing this good practice paper. Noémi Roy, Lydie Da Costa, Roberta Russo, Paola Bianchi, Maria del Mar Mañú-Pereira, Elisa Fermo, Immacolata Andolfo, Barnaby Clark, Melanie Proven, Mayka Sanchez, Richard van Wijk, Bert van der Zwaag, Mark Layton, David Rees and Achille Iolascon all took part in the data synthesis and writing of the guidelines.