Lucio Luzzatto received his MD from the University of Genova in 1959 and has held positions at universities in five countries in three continents. He is currently an honorary professor of haematology at the University of Florence; and a Foreign Member of the Accademia dei Lincei.

David Roper has now retired from his role as Principal Biomedical Scientist at Hammersmith Hospital, Imperial College, London, UK. He has co-written several chapters in major textbooks.