Llamada Saludable: Evaluation of patient engagement with a mobile health program for improving self-management of diabetes in Medellin, Colombia - C. Bourdillon; J. Tasset; R. Philson; M. Gomez; S. Ferguson; J.H. Velasquez Molina; N.L. Salazar Marulanda; N. Marinec; J.F. Saldarriaga Franco; H. Escobar López; J.D. Piette (Ubiquity Press, 2016)