Note that some links will break as pages are moved, websites are abandoned, etc.
If this happens, please try searching for the page in the Wayback Machine at www.archive.org.
"We only see what is being published and that can only be the tip of the iceberg," said (Edzard) Ernst. "Some neurologist sees a stroke and he finds out that this was associated with chiropractic – in 99.9% of cases he won't publish that." Ernst said the under-reporting of adverse effects meant decisions about the best course of treatment for a patient would be made difficult. "Therapeutic decisions ought to be taken not on considering the effectiveness alone but also you have to have effectiveness as a balance with the potential for harm. You have to do a risk-benefit analysis. When you under-report risk, this cannot possibly be done robustly." Alok Jha, The Guardian (14th May 2012)