Utilization of formal social support services by non-institutionalized ill elderly.
D000203:Activities of Daily Living; D006233:Persons with Disabilities; D006299:Health Services for the Aged / Q000706:statistics & numerical data*; D006699:Home Care Services / Q000706:statistics & numerical data*; D006801:Humans; D012846:Singapore; D012931:Social Environment; D012944:Social Support