Aurora Health Care has spent more than $150 million to move to electronic health records since it began the arduous task 15 years ago.

The foundation for its system, spanning its hospitals throughout eastern Wisconsin, has been software from Cerner Corp. Aurora was one of the company’s first large customers.

Yet this year, Aurora decided to replace its system with one designed by Cerner’s biggest competitor, Epic Systems Corp. in Verona.

Read the Milwaukee Journal Sentinel story here.