Correction: Validation of a Standardized Method for Enumerating Circulating Endothelial Cells and Progenitors: Flow Cytometry and Molecular and Ultrastructural Analyses

In this article (Clin Cancer Res 2009;15:267–73), which was published in the January 1, 2009, issue of Clinical Cancer Research (1), funding was omitted from the Grant Support section. It should read as follows:

Grant Support: Pfizer Global Research and Development, NIH/NCI under award number P30CA016672, Associazione Italiana per la Ricerca sul Cancro; Istituto Superiore di Sanita, and Sixth EU Framework Programme (Integrated Project “Angiotargeting”; contract 504743) in the area of “life sciences, genomics and biotechnology for health.” Ministero della Salute RF-IMI-2006-411189. F. Bertolini is a scholar of the U.S. National Blood Foundation.

The author regrets this error.