GW take a look at this thread. It has the info DD1 was talking about.

http://www.pondboss.com/cgi-bin/ubbcgi/ultimatebb.cgi?ubb=get_topic;f=20;t=001994;p=1

George posted a thread a few weeks ago that no one seemed interested in but me. \:\( It looked to me like TPW was starting to crawfish on some of the prior info they developed on this subject. Strange to me but it looked like other motives were involved . I think the first info (thread above) which refers to peer reviewed studies is sound. Go figure.