Correction to: The Pharmacogenomics Journal (2008) 8, 315–320; doi:10.1038/sj.tpj.6500469; published online 7 August 2007

The authors of this article have noted missing information from the affiliation details. Affiliation #1 should read as follows:

‘Department of Genetics, Hospital de Santa Creu i Sant Pau. Universitat Autonoma de Barcelona. Barcelona, Spain’