I have 20 years of experience and specialize in the field of gastroenterology and gastrointestinal endoscopy with specific knowledge in the areas of gastrointestinal cancer, gastrointestinal endoscopy and pancreatic cancer. I have published on such topics as colorectal cancer screening, endoscopic ultrasonography and colonoscopy. I have testified on colon cancer diagnosis, failure to diagnose and complications of endoscopy.