The rating on Rochester, Minn.'s adjustable-rate revenue bonds (Mayo Foundation) series 2001B, issued on behalf of the Mayo Foundation, has been affirmed subsequent to the bank facility being extended to Jan. 26, 2007. The long-term component of the rating is based on Mayo Foundation. The short-term component of the rating is based on Northern Trust Co., Chicago, Ill. The rating on Rochester, Minn.'s health care facilities revenue bonds (Mayo Foundation) series 2001C, issued on behalf of the Mayo Foundation, has been affirmed subsequent to the bank facility being extended to Jan. 26, 2007. The long-term component of the rating is based on Mayo Foundation. The short-term component of the rating is based on U.S. Bank N.A. The rating on Rochester,