b'Surgeons Ajay Jain, MD, and Jason Wallen, MD, Surgeons Ajay Jain, MD, and Jason Wallen, MD, explain a team approach to treating cancers of the stomach and esophagus explain a team approach to treating cancers of the stomach and esophagus. Surgeon Jiri Bem, MD,. Surgeon Jiri Bem, MD, talks about colorectal cancer talks about colorectal cancer. Obstetrician and scientist Helene Bernstein, MD, PhD, discusses. Obstetrician and scientist Helene Bernstein, MD, PhD, discusses hepatitis C in pregnancy. hepatitis C in pregnancy.'