Article Information
PubMed
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History
- Published online March 1, 1991.
Copyright & Usage
© Copyright 1991 by the American Board of Family Practice
Author Information
- Cheri L. Olson, M.D.,
- Benjamin W. Chaska, M.D.,
- Patricia M. Grambsch, Ph.D.,
- Christine M. Wiltgen, B.S. and
- Robert E. Nesse, M.D.