Anna Porwit MD PhD is Professor Emerita at the Division of Pathology, Lund University, Sweden. She has also held professor positions at the Karolinska Institute, Stockholm, Sweden, and at the University of Toronto, ON, Canada. She is a co-author of over 200 original papers and has contributed to the 'WHO Classification of Haematopoietic Malignancies' (2008 and 2016). Marie Christine Béné is Professor Emerita of Hematology, former Professor of Immunology, and lastly head of the Hematology Biology Department in Nantes University Hospital. She has been largely involved in flow cytometry applications in diagnosis and follow-up. She has co-authored over 500 publications, has contributed to the 'WHO Classification of Haematopoietic Malignancies' (2008 and 2016) and leads the European LeukemiaNet WP10 on morphology and flow cytometry.