Beneath the Surface
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Charles M. Wiener, MD, Section Editor
Funding: None.
Conflict of Interest: All authors declare that they have no conflicts of interest.
Authorship: All authors had access to the data and contributed to the writing of the manuscript.
PII: S0002-9343(08)01067-X
doi:10.1016/j.amjmed.2008.10.023
© 2009 Elsevier Inc. All rights reserved.

