Los Angeles (LA) Grading of Esophagitis

David Armstrong, MA, MB BChir, FRCP, FRCPC, FACG, AGAF, is a professor of medicine at McMaster University. His research interests include gastroesophageal reflux disease (GERD), dyspepsia, gastrointestinal (GI) motility, inflammatory bowel disease (IBD), nutrition, short bowel syndrome, colon cancer screening, and quality in endoscopy with 200 peer-reviewed publications, 100 invited reviews and letters, and 300 peer-reviewed abstracts. He has been a principal investigator for numerous clinical trials and taken part in many guideline consensus processes related to GERD, Helicobacter pylori, dysphagia, upper GI bleeding, gastroparesis, wireless capsule endoscopy and endoscopy quality. He is a past president of the Canadian Association of Gastroenterology (CAG), chair of the Canadian National Colon Cancer Screening Network (NCCSN), treasurer of the International Working Group for the Classification of Oesophagitis (IWGCO), chair of the guidelines committee for the World Gastroenterology Organization (WGO) and a board member of the Canadian Digestive Health Foundation (CDHF).

Lars R. Lundell, MD, PhD, is a practicing surgeon and professor of surgery at Karolinska University Hospital in Stockholm, Sweden. He previously served as board member and president of the European Association for Gastroenterology and on the leadership of other societies including Endoscopy and Nutrition (EAGEN), European Society for Esophagology (ESE), the United European Gastroenterology (UEG) Education Committee, the International Working Group for Classification of Oesophagitis (IWGCO), and the International Society for Diseases of the Esophagus (ISDE). Dr. Lundell's primary research interest is GERD, and he has also studied cancer of the stomach and esophagus.