Egger, J. I. M., Delsing, P. A. M., & De Mey, H. R. A. (2003). Differential diagnosis using the MMPI-2: Goldberg’s index revisited. European Psychiatry, 18(8), 409–411. http://www.elsevier.com/inca/publications/store/5/0/5/8/1/4/