About the Authors
School of Medicine and Public Health, The University of Newcastle, Newcastle, New South Wales, Australia
Department of Clinical Pharmacy, University of California San Francisco, San Francisco, California, United States of America
Institute for Clinical Evaluative Sciences, Toronto, Canada
DH appeared as a witness for the Australian Competition and Consumer Commission at the Tribunal held at the Federal Court in Sydney in June 2007. All other authors have no competing interests to declare.
ICMJE criteria for authorship read and met: JR RM EW LB DH. Agree with the manuscript's results and conclusions: JR RM EW LB DH. Designed the experiments/the study: RM. Analyzed the data: JR EW DH. Collected data/did experiments for the study: EW. Wrote the first draft of the paper: RM. Contributed to the writing of the paper: JR RM EW LB DH. Developed the data coding scheme, checked all data entries, designed and co-ordinated data analyses, interpreted the data: JR. Conceptualization and interpretation: LB. Helped design the data collection instrument and analysis plan: LB.