Dr. Turner is an anatomical pathologist. His areas of clinical research interest are gastritis, intestinal metaplasia, and eosinophilic diseases of the gastrointestinal tract. Turner has authored/co-authored more than 50 peer-reviewed scientific articles and five book chapters. He is a key opinion leader in gastritis and gastric intestinal metaplasia, eosinophilic and mast cell diseases of the gastrointestinal tract, and idiopathic inflammatory bowel disease.