Additional File 1.

Knowledge, attitude, and beliefs about herbs and dietary supplements questions. This document contains examples of original survey questions on knowledge, attitude, and beliefs about herbs and dietary supplements. We included thirteen true and false knowledge questions and nineteen questions measuring participants' overall confidence in dealing with herbs and supplements.

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Gardiner et al. BMC Complementary and Alternative Medicine 2006 6:21   doi:10.1186/1472-6882-6-21