Torres, J., Palencia, D., Sánchez, D. M., García, J., Rey, H., & Echandía, C. A. (2006). Kangaroo Mother Program: results of follow-up at 40 weeks of postconceptional age. Colombia Medica, 37(2), 96–101. https://doi.org/10.25100/cm.v37i2.419