[To Parent Directory] 2/22/2007 5:06 AM 144443 RDG42N0021_abstract.pdf 4/20/2008 8:44 PM 4736028 RDG42N0021_full.pdf 4/20/2008 8:42 PM 2485906 RDG42N0021_s01.pdf 4/20/2008 8:43 PM 2208270 RDG42N0021_s02.pdf