| Christine M Gilroy Echinacea and truth in labelingChristine M Gilroy Department of General Internal Medicine, University of Colorado Health Sciences Center, Denver, USA Arch Intern Med 163:699-704. 2003 Physician and public opinions on quality of health care and the problem of medical errorsAndrew R Robinson 1719 E 19th Ave, 5C East, Denver, CO 80218, USA Arch Intern Med 162:2186-90. 2002 Direct-to-consumer pharmaceutical advertising: physician and public opinion and potential effects on the physician-patient relationshipAndrew R Robinson Division of General Internal Medicine, University of Colorado Health Sciences Center and HealthONE Presbyterian St Luke s Hospital, Denver, USA Arch Intern Med 164:427-32. 2004
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