...S&P Global Ratings raised its ratings to 'A' from 'A-' on the Maryland Health & Higher Education Facilities Authority's (MHHEFA) various series of health care revenue bonds issued for University of Maryland Medical System (UMMS). In addition, we assigned our 'A' rating to MHHEFA's series 2017D tax-exempt health care revenue refunding bonds and 2017E taxable revenue bonds, also issued for UMMS. The outlook on all series of debt is stable. We also raised our dual ratings on MHHEFA's series 2008D and 2008E variable-rate revenue bonds to '##+/A-1+' and '##+/A-1' from '##/A-1+' and '##/A-1', respectively. This action reflects the application of our low-correlation joint criteria. The long-term components of the ratings are based jointly on bank-supported letters of credit (LOCs) and our 'A' underlying rating on UMMS. The short-term components of the ratings are based solely on the ratings on the LOC providers, which are TD Bank N.A. (A-1+) for the series 2008D, and Bank of Montreal (A-1) for...