Jaing, T.-H. and Chang, T.-Y. (2026) “Association does not establish causation. Comment on: ‘Overuse of thrombopoietin receptor agonists driven by suboptimal response is associated with myelofibrosis in pediatric immune thrombocytopenia’”, Haematologica. Pavia, Italy. doi: 10.3324/haematol.2026.302201.