Erratum for vol. 100, p. 3419

In the article by Ruzickova et al entitled “Chronic lymphocytic leukemia preceded by cold agglutinin disease: intraclonal immunoglobulin light-chain diversity in V_H4-34expressing single leukemic B cells,” which appeared in the November 1, 2002, issue of Blood (Volume 100:3419-3422), Laboratory of Gene Expression, 1st Medical Faculty, Charles University, Prague, Czech Republic, should have been included in the affiliations, and the grant MSM/111100003 of the Ministry for Education, Youth and Sports of Czech Republic should have been included in the acknowledgements.