Right, this is what the authors demand: "as no single experiment can definitively confirm the theory, we must continue to test it with additional works. Among

Right, this is what the authors demand: "as no single experiment can definitively confirm the theory, we must continue to test it with additional works. Among them [and even if insufficient to definitively validate the hypothesis], a randomised clinical trial comparing patients with low versus high exposure to Yersinia would be an important step."