. 2014 Sep 25;2(3):e38. doi: 10.2196/mhealth.2904
©Catalina Lopez, Daniel Camilo Ramirez, Jose Ignacio Valenzuela, Arturo Arguello, Juan Pablo Saenz, Stephanie Trujillo, Dario Ernesto Correal, Roosevelt Fajardo, Cristina Dominguez. Originally published in JMIR Mhealth and Uhealth (http://mhealth.jmir.org), 25.09.2014.
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Figure 1.
Mobile phone subscriptions in Colombia, 2000-2012. Data taken from the International Telecommunication Union [22].