Retraction note: Assessment of the use of immunosuppressants combined with cord blood for severe aplastic anemia.

This original article, published in the Asian Pacific Journal of Allergy and Immunology, has been retracted from this journal based on an error of the analysis. The authors would like to withdraw their article. Due to the nature of the error, the Editorial board has decided to retract this article although this error does not affect the validity of the study. We apologize for any adverse consequences this may have caused.