Campanelli R, Rosti V, Villani L, Castagno M, Moretti E, Bonetti E, Bergamaschi G, Balduini A, Barosi G, Massa M. Evaluation of the bioactive and total transforming growth factor β1 levels in primary myelofibrosis. Cytokine. 2011 Jan;53(1):100–6. doi: 10.1016/j.cyto.2010.07.427. PMID: 20801055.