Ah-young Jeon and In-cheol Kim and Jae-hee Jung and Soo-young Ye and Jae-hyung Kim and Ki-gon Nam and Seoung-wan Baik and Jung-hoon Ro and Gye-rok Jeon, Implementation of the Personal Emergency Response System. journal = {International Journal of Medical and Health Sciences}, [online]. World Academy of Science, Engineering and Technology. June 2007, vol. 6(6). 390 - 394 [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/3782.