Al-Samkari H, van Beers EJ, Kuo KH, Barcellini W, Bianchi P, Glenthøj A, del Mar Mañú Pereira M, van Wijk R, Glader B, Grace RF. The variable manifestations of disease in pyruvate kinase deficiency and their management. Haematologica 2020;105(9):2229-2239; https://doi.org/10.3324/haematol.2019.240846.