Bonilla-Londoño, M. M.; Barrera-Chaparro, J. P.; Arroyave-Godoy, Ángela P.; Díaz-Roa, M. E. Reproducibility of Soft Tissue Cephalometric Landmark Identification by Conventional and Digital Direct Radiography. Rev Fac Odontol Univ Antioq 2014, 25, 76-91.