We must stop insisting on calling expert opinions guidelines. We should only call something a guideline when the data are very clear and we really have consensus on those data.

Guidelines fail when there is little or poor evidence; guidelines themselves are not inherently bad. Where we lack good evidence, we should invest in conducting sound research to fill-in our gaps in knowledge.

Perhaps when professional societies and government institutions develop guidelines they should include within them a roadmap for future research to answer looming questions...