On page 1039, left-hand column, the text reads:

“In fact, a careful consideration of patients’ heterogeneity in terms of major disease markers, such as staging, duration and treatment, or more insightful interpretation of its clinical meaning beyond the psychometric limitations of the MMSE.”

The complete sentence should be:

“In fact, a careful consideration of patients’ heterogeneity in terms of major disease markers, such as staging, duration and treatment etc, may not only reduce the variability of ARC estimate on the MMSE,but also allows for more insightful interpretation of its clinical meaning beyond the psychometric limitations of the MMSE.”

The underlined text is missing.