If I were dying of cancer, odds are good that I would have ended up in the control group for not being especially proactive about visiting the hot springs. The

If I were dying of cancer, odds are good that I would have ended up in the control group for not being especially proactive about visiting the hot springs. The authors of [2] explain this limitation themselves: "Some study limitations should be considered. ... healthier people may have been more likely to bathe in the radon hot springs."