Beverley Greenwood and the OCNS are nationally and internationally recognized as experts in gastrointestinal discovery research. Their professional research scientists are knowledgeable and experienced in many aspects of gastrointestinal research related to understanding the etiology and pathology of gastrointestinal disorders such as, irritable bowel syndrome, inflammatory bowel disease, constipation, diarrheas and gastroesophageal reflux disease (GERD). If you would like to find out more about our work than is given here, please contact our Scientific Director: Dr. Beverley Greenwood-Van Meerveld Veterans Affairs Hospital 921 NE 13th St. Research Administration Rm. 151 Oklahoma City, OK 73107 Tel: (405) 270-0501 ext. 3547 Fax: (405) 290-1719 Email: Beverley-Greenwood@ouhsc.edu