I'm curious about this: why have you allowed the following statements on the page: " As Kaposi's sarcoma occur in homosexual AIDS-patients 20 times more often than in non-homosexual AIDS-patients, some cofactor must be involved beyond the virus HIV itself, and poppers have been suggested as the cofactor especially in view of the fact that they are carcinogenic (Kaposi's sarcoma being a form of cancer)."

Where is the proof these statements are true?

And, please, don't ask the rest of us to have to prove a negative.  It's incompent upon you to defend and explain why you would allow such a statement on Wikiepedia.