...Fitch placed Stamford Health System's (Stamford) revenue bond rating on Negative Watch on Sept. 8, 2017 after publishing an exposure draft of its "U.S. Not-for-Profit Hospitals and Health Care System Rating Criteria." The recent downgrade of the revenue bond rating to `BBB+' from `A' follows the Jan. 9, 2018 publication of the updated criteria, which place a heightened emphasis on the maintenance of leverage ratios and liquidity through the cycle in Fitch's rating case. The 'BBB+' IDR and bond rating reflect Fitch's assessment of Stamford's financial profile through the cycle as weak under the new criteria....