My son was diagnosed with Lieukemia when he was 4. Viacord has since been kind enough to store a few of my children's cord blood and tissue at no cost for our family for a 5 year time period. I am now due with another child, and received a response from my oncologist that she will not fill out a form to allow me to bank this baby's cord blood and tissue because I have "stored enough". What is your opinion on this response?