Correction to: Modern Pathology advance online publication 14 October 2016; doi: 10.1038/modpathol.2016.182

In this article, on page 6, left column, in the ‘Discrepancies between Morphological Profiles and Clinical Features’ section, second paragraph, line 6 should read ‘….but 13 patients out of 25 did not meet at least two of the four minor diagnostic criteria defined in the updated WHO 2008 classification for primary myelofibrosis…’