Two Questions: endometriosis & chlorine bleaching

[Mike Ewall <catalyst@envirolink.org>]

1) How established is the link between dioxin and endometriosis?  Should it
be referred to as a "probable" link or are we more confident than that?

2) How are dioxins formed when bleaching paper products and tampons?  Are
there dioxins contaminating the bleaches themselves or are dioxins formed
in the bleaching process?  I understand that dioxins are formed in
temperature ranges around 400-750 degrees Fahrenheit (200-400 Celcius).
Does the bleaching process get to that temperature range or are dioxins
formed some other way?

Mike