National Archive of Computerized Data on Aging

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Pub. Year
Citation
1989
Sonnenberg, Amnon,  Koch, Timothy R. Epidemiology of constipation in the United States. Diseases of the Colon and Rectum. 32, (1), 1-8.
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1991
Johanson, John F.,  Sonnenberg, Amnon . Temporal changes in the occurrence of hemorrhoids in the United States and England. Diseases of the Colon and Rectum. 34, (7), 585-591.
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