Paulo Pacheco, MD, has written, published, and lectured
nationally in gastroenterology and has served as a member and
advisor for various national medical associations. Board-certified
in internal medicine and gastroenterology, he graduated from Brown
University Medical School and is a Clinical Assistant Professor of
Medicine at New York University School of Medicine. Dr. Pacheco
resides in New York City, where he maintains a private practice in
gastroenterology. Marilyn Olsen has been a medical writer for more
that 15 years. She has written medical columns and articles for
numerous magazines and newspapers.