Standard&Poor's Ratings Services affirmed its 'AA-/A-1+' rating on Rochester, Minn.'s (Mayo Clinic) hospitality variable-rate demand obligation series 2000C and 2001D, due to their bank facilities being extended to Jan. 12, 2011, and Jan. 21, 2011, respectively. The long-term component of the rating is based on Mayo Clinic. The short-term component of the rating is based on liquidity facility provided by Wells Fargo Bank N.A., South Dakota. The stable outlook is based on the outlook of the obligor. USPF Criteria: Bank Liquidity Facilities, June 22, 2007