NEW YORK (Standard&Poor's) Oct. 13, 2011--Standard&Poor's Ratings Services assigned its 'AA-' long-term rating to three series of revenue refunding bonds issued by Maryland Health&Higher Educational Facilities Authority, for Johns Hopkins Health System Obligated Group (JHHS), as follows: $53.52 million series 2011 tax-exempt loan to be issued in an index floating-rate mode; $75.71 million series 2011A fixed-rate bonds; and $48.43 million series 2011B to be issued in an index floating-rate mode. Standard&Poor's also affirmed various ratings on debt issued for JHHS. "The 'AA-' rating reflects our assessment of JHHS's strong business position highlighted by solid market share in the somewhat fragmented greater Baltimore market, with a broad regional, national, and international draw driven