[To Parent Directory] 2/22/2007 9:08 AM 50160 RDG44N0002_abstract.pdf 4/21/2008 7:27 PM 3946732 RDG44N0002_full.pdf 4/21/2008 7:25 PM 2041635 RDG44N0002_s01.pdf 4/21/2008 7:27 PM 1881352 RDG44N0002_s02.pdf