In the March issue (Volume 45, No. 1, 2010) of the KJH, the digital object identifiers (DOIs) were mistakenly omitted in the Perspectives and the Images of Hematology. The DOIs for those articles should have been provided as below.
"The prospect of the government management for cord blood in Korea - at the time of enactment of the 『cord blood management and research act』" by Lee YH (Korean J Hematol 2010;45:1-2.) DOI: 10.5045/kjh.2010.45.1.1
"Plasma fractionation in Korea: working towards self-sufficiency" by Park Q, et al. (Korean J Hematol 2010;45:3-5.) DOI: 10.5045/kjh.2010.45.1.3
"Refractory anemia with ring sideroblasts in a young individual" by Cho JH, et al. (Korean J Hematol 2010;45:6.) DOI: 10.5045/kjh.2010.45.1.6
"Necklace-like microvacuoles of tumor cells in blastic plasmacytoid dendritic cell neoplasm" by Hwang SM, et al. (Korean J Hematol 2010;45:7.) DOI: 10.5045/kjh.2010.45.1.7