From a forum of Health Rising:
http://www.cortjohnson.org/forums/threads/more-oxygen-by-epo-how-in-natural-way.3511/#post-9915
Study:
file:///C:/Users/Marco%20de%20Boer/AppData/Local/Microsoft/Windows/INetCache/IE/HDARVZMK/Treatment_of_elevated_C4a.pdf
http://www.cortjohnson.org/forums/threads/more-oxygen-by-epo-how-in-natural-way.3511/#post-9915
Study:
file:///C:/Users/Marco%20de%20Boer/AppData/Local/Microsoft/Windows/INetCache/IE/HDARVZMK/Treatment_of_elevated_C4a.pdf