OPINION REVIEW

1. European Specialty Examination in Gastroenterology and Hepatology examination — improving education in gastroenterology and hepatology
2. Effectiveness and safety of sedation in gastrointestinal endoscopy:An opinion review

REVIEW

1. Probiotics in inflammatory bowel disease:Does it work?
2. Pathological characterization of occult hepatitis B virus infection in hepatitis C virus-associated or non-alcoholic steatohepatitis-related hepatocellular carcinoma
3. Hypoxia and oxidative stress:The role of the anaerobic gut, the hepatic arterial buffer response and other defence mechanisms of the liver
4. Helicobacter pylori and gastric cardia cancer:What do we know about their relationship?
5. Treatment strategies and preventive methods for drug-resistant Helicobacter pylori infection

MINIREVIEWS

1. Utility of gastrointestinal ultrasound in functional gastrointestinal disorders:A narrative review

SYSTEMATIC REVIEWS

1. Systematic review with meta-analysis of the epidemiological evidence relating smoking to type 2 diabetes

META-ANALYSIS

1. Single-balloon and spiral enteroscopy may have similar diagnostic and therapeutic yields to double-balloon enteroscopy:Results from a meta-analysis of randomized controlled trials and prospective studies

SCIENTOMETRICS

1. Chinese research into ulcerative colitis from 1978 to 2017:A bibliometric analysis