People v. Slim , 127 Ill. 2d 302 ( 1989 )
People v. Piatkowski , 225 Ill. 2d 551 ( 2007 )
People v. Cunningham , 212 Ill. 2d 274 ( 2004 )
People v. Ross , 229 Ill. 2d 255 ( 2008 )