NEXUS SURGICAL ASSOCIATES (MTE), #08-06 MOUNT ELIZABETH MEDICAL CENTRE, 3 MOUNT ELIZABETH, Singapore 228510, NEXUS SURGICAL ASSOCIATES (MTEN), #08-43 MOUNT ELIZABETH NOVENA SPECIALIST CENTRE, 38 IRRAWADDY ROAD, Singapore 329563, NEXUS SURGICAL ASSOCIATES (MTA), #06-05 MOUNT ALVERNIA MEDICAL CENTRE A, 820 THOMSON ROAD, Singapore 574623, NEXUS SURGICAL ASSOCIATES (PARKWAY EAST), #05 -01 PARKWAY EAST MEDICAL CENTRE, 319 JOO CHIAT PLACE, Singapore 427989 