بؤلمه:شیرکت‌لر بؤلمه:Companies listed on the New York Stock Exchange بؤلمه:Health care companies established in 1971 بؤلمه:Health care companies based in Ohio بؤلمه:Companies based in Dublin, Ohio بؤلمه:Companies based in the Columbus, Ohio metropolitan area بؤلمه:1971 establishments in Ohio بؤلمه:1980s initial public offerings