[To Parent Directory] 2/22/2007 4:48 AM 58506 RDG43N0021_abstract.pdf 4/21/2008 1:25 PM 3794927 RDG43N0021_full.pdf 4/21/2008 1:22 PM 2018832 RDG43N0021_s01.pdf 4/21/2008 1:24 PM 1749394 RDG43N0021_s02.pdf