Accepted for Publication: April 20, 2011.
Author Contributions: Drs Blanc and Ben Abdelghani equally contributed to this study. Study concept and design: Blanc and Sibilia. Acquisition of data: Blanc, Ben Abdelghani, Chatelus, Sordet, Gottenberg, and Sibilia. Analysis and interpretation of data: Blanc, Schramm, Jaulhac, Gottenberg, and Sibilia. Drafting of the manuscript: Blanc, Ben Abdelghani, Schramm, Jaulhac, and Sibilia. Critical revision of the manuscript for important intellectual content: Blanc, Chatelus, Sordet, and Gottenberg. Administrative, technical, and material support: Chatelus and Sordet. Study supervision: Blanc and Sibilia.
Financial Disclosure: None reported.