National Registry of Diseases Office Singapore Stroke Registry NRST112 ADMIS_HOS Admission hospital 0100000=SGH, 0200000=TTSH, 0300000=AH, 0500000=NUH, 0700000=KKH, 1600000=CGH, 1800000=NHC, 5700000=KTPH, 13H0236=NTFGH, 14H0182=SKH, ZZ99998=Other local hospital and A/E dept of restructured hospital 2005-2021