Smart119 was introduced in the June 20th issue of "Prehospital Care, Volume 169" (Tokyo Horei Shuppan).
The article is titled "Demonstration Experiment of Smart119, a Next-generation Emergency Medical Support System That Improves the Efficiency of Emergency Transport and the Lifesaving Rate in Yamanashi Prefecture" and includes a detailed report on the demonstration experiment conducted under the "TRY! YAMANASHI! Demonstration Experiment Supporting Project".

"Prehospital Care, Volume 169" is available at Fujisan, an online magazine bookstore.
https://www.fujisan.co.jp/product/1281687274/new/