Prosecution witness challenges findings of defense 'bug expert' By Jeff DillonSIGNONSANDIEGO July 30, 2002 Union-TribuneDr. M. Lee Goff An insect expert testifying for the prosecution in the David Westerfield case said Tuesday that flies appeared to have colonized Danielle van Dam's body sometime between Feb. 1 and Feb. 14, far earlier than defense witnesses have estimated. M. Lee Goff, an entomologist and chairman of the Forensic Sciences Department of Chaminade University in Honolulu, said his review of the crime scene photos, morgue photos, weather reports and other evidence suggest that Danielle's body was exposed to insects as early as...