Still do not know how to provide a direct link for you but
www.narth.com/docs/bioresearch.html
I did not supply any links to sexually transmitted diseases. Because of the tearing of the anal tissues during sexual relations between homosexual males - there is a greater likelihood of contracting all sexually transmitted diseases. This puts them at a greater disadvantage than heterosexuals.
I consider this common knowledge as you probably do too. I assumed you were really questioning the other things in the post anyway. On the off chance you would like to research this I am sure there is information on this as well.