Pérez, M., Ramírez, G., Pérez, M., & Restrepo, P. (2007). Validation of an analytical method for the determination of valsartan in human plasma by HPLC/UV with addition standard using losartan as an internal standard. Colombia Medica, 38(1), 13–20. https://doi.org/10.25100/cm.v38i1.469