DALLAS (Standard&Poor's) April 6, 2012--Standard&Poor's Ratings Services assigned its 'AA' long-term rating to the Michigan Finance Authority's $106.93 million fixed-rate series 2012MI bonds issued for Trinity Health. In addition, Standard&Poor's affirmed its 'AA' long-term rating and underlying rating and 'AA/A-1+' dual rating on debt issued by various parties for Trinity Health. "The 'AA' rating reflects our view of the health system's consistent financial performance, sound balance sheet, good financial risk dispersion, and tenured management team," said Standard&Poor's credit analyst Kevin Holloran. We understand that bond proceeds will be used to refund Trinity Health's series 2002C debt. The stable outlook reflects our view that Trinity Health's operating performance will likely remain solid during