Jean-Christophe Ianotto, Natalia Curto-Garcia, Marie Lauermanova, Deepti Radia, Jean-Jacques Kiladjian, Claire N. Harrison. Characteristics and outcomes of patients with essential thrombocythemia or polycythemia vera diagnosed before 20 years of age: a systematic review. Haematologica 2019;104(8):1580-1588; https://doi.org/10.3324/haematol.2018.200832.