Chávez González, E., E. F. González Rodríguez, and M. del C. Llanes Camacho. “Dependence of P-Wave Dispersion on Mean Arterial Pressure As an Independent Hemodynamic Variable in School Children”. Colombia Médica, Vol. 44, no. 3, Sept. 2013, pp. 178-83, doi:10.25100/cm.v44i3.1237.