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Julia H. Indik, MD, PhD, Section Editor
Funding: None.
Conflict of Interest: All of the authors declare no conflict of interest concerning this manuscript.
Authorship Statement: All authors had full access to the data and participated in the data collection, design and writing of the manuscript. Each author has seen and approved the submitted version.
PII: S0002-9343(08)00994-7
doi:10.1016/j.amjmed.2008.10.008
© 2009 Elsevier Inc. All rights reserved.

