letter . 2014 Mar 7;2(1):e9. doi: 10.2196/mhealth.2730
©Marie Sjölinder, Anneli Avatare Nöu. Originally published in JMIR mHealth and uHealth (http://mhealth.jmir.org), 07.03.2014.
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Figure 1.
A social alarm – base unit and an alarm button.