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Original Contribution |  FREE
Richard P. Gallagher, MA; Jason K. Rivers, MD, FRCPC; Tim K. Lee, MSc; et al.
JAMA. 2000;283(22):2955-2960. doi:10.1001/jama.283.22.2955.

Clinical Crossroads | 
Jennifer Daley, MD; Erin E. Hartman, MS
JAMA. 1998;280(8):736. doi:10.1001/jama.280.8.736.

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