NEW YORK (Standard&Poor's) April 12, 2011--Standard&Poor's Ratings Services raised its long-term rating to 'AA' from 'AA-' on various issuers' debt, issued for Mayo Clinic, Minn. At the same time, Standard&Poor's raised its dual ratings to 'AA/A-1+' from 'AA-/A-1+' on all of Rochester, Minn.'s variable-rate debt issued for Mayo Clinic with the exception of the series 2001A-C bonds; the rating on these bonds was raised to 'AA/A-1' from 'AA-/A-1'. In addition, Standard&Poor's raised its rating to 'AA' from 'AA-' on Wisconsin Health&Educational Facilities Authority's series 2008 bonds issued for Luther Hospital, Wis., with a guaranty from the Mayo Clinic; raised its rating to 'AA' from 'AA-' on Maricopa County Industrial Development