"Then I went to a hospital abroad": acknowledging implications of stakeholders' differing risk understandings related to use of complementary and alternative medicine in European health care contexts.

Acknowledging implications of stakeholders' differing risk understandings related to CAM use and regulation may positively influence patient safety in European healthcare. Definitions of the concept of risk should include the factors uncertainty and subjectivity to grasp the full picture of possible risks associated with the use of CAM. To transform the findings of this study into practical settings, we introduce sets of questions relevant to operationalize the important question "What is risk?" in health policy-making, clinical encounters and risk research involving European patients' use of CAM.