Erratum to: Pharm World Sci (2009) 31:439–449 DOI 10.1007/s11096-009-9292-1

We regret that there is an error in the list of authors for this publication.

The correct authorship of this article belongs to the following three authors (not one individual author): Betty B. Chaar*, Joanne Brien* and Ines Krass* (*Faculty of Pharmacy, University of Sydney). The author for correspondence remains B. B. Chaar (email: b.chaar@pharm.usyd.edu.au).