(4-traders.com) By a News Reporter-Staff News Editor at Health & Medicine Week -- DaVita Kidney Care, a division of DaVita Inc. (NYSE: DVA), a leading provider of kidney care services in the United States, announced its acquisition of Wisconsin-based Purity Dialysis (see also DaVita Kidney Care). "We are excited to welcome Purity Dialysis' teammates,...http://www.4-traders.com/DAVITA-INC-12378/news/DaVita-Acquires-Purity-Dialysis-24451328/