publicaciones seleccionadas artículo académico Teleophthalmology: a strategy for timely diagnosis of sight-threatening diabetic retinopathy in primary care, Concepción, Chile. INTERNATIONAL JOURNAL OF OPHTHALMOLOGY. 12(9):1474-1478. 2019 Use of PLE-Portfolio to Assess the Competency-Based Learning through Web 2.0 in Technical Engineering Education. INTERNATIONAL JOURNAL OF ENGINEERING EDUCATION . 30(3):675-682. 2014