Rating action          MARC Ratings has assigned a rating of AAIS(cg) to Sunway Healthcare Treasury Sdn Bhd’s (SH Treasury) Islamic Medium-Term Notes (Sukuk Wakalah) Programme of up to RM5.0 billion. The outlook is stable. The rating reflects the credit strength of parent, Sunway Healthcare Holdings Sdn Bhd (SHH) based on the unconditional and irrevocable guarantee ...