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Article
January 9, 1991

Abstracts

JAMA. 1991;265(2):205-208. doi:10.1001/jama.1991.03460020059015

Edited by Carin M. Olson, MD, Contributing Editor.

Abstracts are selected on the basis of interest to our readers. Publication herein does not suggest an endorsement of content or a validation of conclusions.

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