Quite frankly the way some people are addressing other posters is really quite rude and uncalled for, talking to a grown and intelligent woman such as lizameridox as if she were a somewhat slow and dull child, and I am sure I am not alone in feeling insulted and put-down when reading some posts. There are ways to say you disagree with someone without resorting to childish put-downs and rudeness.
A thought - if the Tsarevich didn't have haemophilia but some other disease of which we know much more these last few years, wouldn't scientists etc have said "Well, wait a minute, it looks like everyone has been wrong - for decades it was thought the Tsarevich had haemophilia, but his symptoms are actually that of XYZ." I haven't seen any recent books on the Romanovs that suggest anything other than haemophilia. Once again, it seems the only real dissenting position comes from the supporters of a haemophia-less claiment.
If it was proved by DNA the Tsarevich-martyr didn't have haemophilia, I would accept that, but until it is proven otherwise, I will agree with what has been common knowledge, since, it would seem, 1912 - that the poor kid was a 'bleeder'.