González-Martín, C., Pita-Fernández, S., Seoane-Pillado, T., López-Calviño, B., Pertega-Díaz, S., & Gil-Guillen, V. (2017). Variability between Clarke’s angle and Chippaux-Smirak index for the diagnosis of flat feet. Colombia Medica, 48(1), 25–31. https://doi.org/10.25100/cm.v48i1.1947