Sorry earthdirt, just realised the website does have an author and does, it seem list one of the articles ive stated above! Still, given my points above, I don't feel its justified for the article to claim "Scientific studies indicate that hypnosis and self-hypnosis can be effective at reducing bleeds and the severity of bleeds and thus the frequency of factor treatment." given that 1) the source provided through wiki doesn't provide scientific evidence to reach an informed decision in this regard and 2) the claim on the maryland website is based on research that hasn't been looked at further since the 1980's. 

 I'd suggest re-writing to greatly reduce emphais on this 'treatment'.