NEW YORK (Standard&Poor's) March 12, 2010--Standard&Poor's Ratings Services revised its rating outlook to positive from stable and affirmed its 'AA-' rating on various issuers' debt, issued for Mayo Clinic, Minn. At the same time, Standard&Poor's affirmed its various other ratings on numerous bonds issued on behalf of Mayo Clinic. In addition, Standard&Poor's revised its rating to 'AA-' from 'AA-/A-1+' on Wisconsin Health and Educational Facilities Authority's series 2008 bonds issued for Luther Hospital, Wis., with a guaranty from Mayo Clinic, following the conversion of the series 2008 bonds to fixed-rate from variable-rate demand bonds. Offsetting credit factors include liquidity levels that are still below similarly rated organizations and in Standard&Poor's
