This might be a problem, I think we need to dig bit deeper and decided if we need to add this information to our files or dismiss it, if he/she is who they claim to be then we must take note.
I now quote:
I have to clarify your blood compatibility chart. Your data is correct if you are referring to packed red blood cell transfusions (typical in-hospital type). But if you are talking about person to person whole blood transfusions your chart is completely incorrect. As a hospital laboratory tech for 10 years I know what I am talking about. If you want correct information then I will be happy to supply that. But if you do not want to believe me (as on Survivalblog.com) then I do hope that your readers do not attempt a person to person blood transfusion based on your recommendations.