By
JOHN M. DUGGAN
ANNE E. DUGGAN

2006

In offering this book to what we hope will be interested readers, we have
several aspirations. We have aspired to present to students and clinicians a
rather narrow view of epidemiology concentrating on the causal factors and
setting of the more usual gastroenterological problems and giving greater
space to conditions of importance for which major knowledge of causation
and course is available.