At a glance it looks like they screwed up and forgot the content-type header. Through Google I was able to find and read the cached version, and it answered why they currently exist, not why they used to.
However a bit of Googling around found [link|http://www.intelihealth.com/IH/ihtIH/WSIHW000/35320/35323/361888.html?d=dmtHMSContent|http://www.intelihea...l?d=dmtHMSContent] which told me that I was repeating a common myth. What I said about the health effects of RH factor is not a myth, but that it was the reason for introducing blood tests was.
Mea culpa. Live and learn. Etc.
Ben