Correction to: Leukemia; doi:10.1038/leu.2012.119; advance online publication, 3 May 2012
Since the publication of this article, the authors have noticed an error in Figure 4a, specifically that the structures of the methyl-pomalidomide enantiomers were missing a carbonyl group.
The error has now been rectified, and the correct article (with the correct figure 4) appears in this issue. The html and online pdf versions have also been rectified, and now carry the correct paper.
The authors would like to apologise for any inconvenience this may have caused.