For the record, we do not believe what the PET industry says about the safety of PET bottles. Here is their official “PET safety and use” page, which you will notice contains no links to the studies referenced. The National Association for PET Container Resources references a 2009 German study that in our opinion does not seem conclusive. In general, the industry-sponsored studies tend to be done not in real-world usage scenarios. For example, they will test the plastic in resin bead form, prior to any additives, processing, and environmental conditions.
For some more information that is not plastics industry sponsored, see the USA Today article “Study: Most Plastic Products Trigger Estrogen Effect,” which references a 2011 University of Texas study that is also summarized in a blog article by blogger and TEDx speaker Beth Terry.