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Le Bousse-Kerdiles MC (2004) Standardised protocol for circulating CD34+ cell quantification by flow cytometry using the ‘‘Stem-KitTM CD34+ HPC Enumeration Kit’’. Available: http://wwwleukemia-netorg/content/leukemi- as/cmpd/recommendations/e1744/infoboxContent1747/LeBousse_Standardi sed_protocol_for_CD34pdf. Accessed 2011 Dec 22. PLoS ONE | www.plosone.org 11 January 2012 | Volume 7 | Issue 1 | e30389