Harris v. Manor Healthcare Corp. , 111 Ill. 2d 350 ( 1986 )
Purtill v. Hess , 111 Ill. 2d 229 ( 1986 )
Sheldon v. Metro-Goldwyn Pictures Corp. , 60 S. Ct. 681 ( 1940 )
Schatz v. Abbott Laboratories, Inc. , 51 Ill. 2d 143 ( 1972 )