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Preventive Medicine|January 1, 1993
The effect of physician advice on exercise behaviorB S Lewis, W D Lynch
Gastroenterology Clinics of North America|February 7, 2001
Small intestinal bleedingB S Lewis
Journal of Occupational Medicine. : Official Publication of the Industrial Medical Association|November 1, 1993
Frequency of exercise and dropouts in a work-site program. Correlates of 6-month activity patternsW D Lynch, D S Main
Journal of Occupational and Environmental Medicine|May 1, 1995
Demand management: enabling patients to use medical care appropriatelyD M Vickery, W D Lynch
Gastrointestinal Endoscopy Clinics of North America|January 5, 2000
EnteroscopyB S Lewis
Seminars in Gastrointestinal Disease|June 11, 1999
Medical and hormonal therapy in occult gastrointestinal bleedingB S Lewis
Gastroenterology Clinics of North America|March 1, 1994
Small intestinal bleedingB S Lewis
Gastrointestinal Endoscopy Clinics of North America|December 3, 1998
The history of enteroscopyB S Lewis
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