A July 2013 peer-reviewed study published in the "World Journal of Hepatology" reexamined known cases of hepatoxicity that had previously been linked to consumption of Herbalife products and concluded that using "the liver specific Council for International Organizations of Medical Sciences scale, causality was probable in 1 case, unlikely and excluded in the other cases. Thus, causality levels were much lower than hitherto proposed." In a separate review published less than a year earlier, the same author described the relationship between Herbalife products and reported hepatoxicity cases as "highly probable".