ESA's are used and recommended. Here is an article about its use in children with Leukemia. http://medicc.org/mediccreview/articles/mr_154.pdf Unfortunately it is from Cuba - however some of the doctors in the references may be in the US and use them. Try Dr Seiski at Allhegeny General - he is a cancer surgon and head of bloodless program there.
Here is another article with citations http://onlinelibrary.wiley.com/doi/10.1002/pbc.22050/full has reference to James Feusner, Dept of Hematology/Oncology, Children's Hospital & Research Center Oakland, 747 52nd St., Oakland, CA 94609 email ( 4 years ago ) firstname.lastname@example.org