MILTON, England, Nov. 25 -- Expert Review of Gastroenterology and Hepatology, a peer-reviewed journal that says it covers clinical advancements in pathological, biochemical and physiological understanding of the diseases affecting the gastrointestinal tract and liver, published research articles on the following topics in its Vol. 18, Issue 10 edition:

Special Report

* Principle of sample size calculation in gastroenterology research: a practical guide for clinicians