Interesting article. Frank http://www.ntkinstitute.org/news/content.nsf/PaperFrameSet?OpenForm&pp=1&id=498180318B9B4685852569C9004D84B8&refid=3849&specid=3&newsid=852571020057CCF685257A0B00009ECC&locref=ntkwatch&u=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Abstract&list_uids=22623211