Parker, G., Fink, M., Shorter, E., Taylor, M. A., Akiskal, H., Berrios, G., Bolwig, T., Brown, W. A., Carroll, B., Healy, D., Klein, D. F., Koukopoulos, A., Michels, R., Paris, J., Rubin, R. T., Spitzer, R. & Swartz, C., jul. 2010, En: American Journal of Psychiatry.167, 7, p. 745-7473 p.