The Sultan of Brunei, Sultan Hassanal Bolkiah has praised the quality of care and medical expertise at the National Heart Institute (IJN) following his recent treatment at the facility, Prime Minister Datuk Seri Anwar Ibrahim said.br br Anwar, who visited the monarch at IJN before his return to Bandar Seri Begawan on Tuesday (June 3), said the Sultan expressed deep appreciation for the professionalism and efficiency of the medical team.