Acknowledgments

This work was supported in part by the Regenstrief Institute, as well as grants and contracts from the National Library of Medicine (Contracts NO1-LM-4-3510, N01-LM-6-3546, and N01-LM-9-3517), the John A. Hartford Foundation of New York, and the Agency for Health Care Policy and Research (AHCPR) (Grants HS 08750 and HS 07719-03).

This endeavor was also supported in part by Grant/Cooperative Agreement Numbers R13/CCR517099 and H75/CCH520501 from the Centers for Disease Control and Prevention. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the Centers for Disease Control and Prevention.

This work was initiated by and performed under the auspices of the Regenstrief Institute.