Personal response systems: an international report of a new home care service. Proceedings of First International Symposium on Emergency Response Services for Frail Persons Living Alone, held in Washington, DC, May 31-June 2, 1990.
D000368:Aged; D003143:Communication Devices for People with Disabilities; D004631:Emergency Medical Service Communication Systems; D016330:Frail Elderly; D006801:Humans