North CS, Kawasaki A, Spitznagel EL, Hong BA, Longitudinal study of post-traumatic stress disorder after severe floods. Journal of Nervous and Mental Disease 2004;192 (12): 823-829.
North CS, Pfefferbaum B, Narayanan P, Thielman S, McCoy G, Dumont C, Kawasaki A, Ryosho N, Kim Y, Spitznagel EL. Postdisaster psychiatric disorders after the US embassy bombing in Nairobi-comparison with Federal Building bombing in Oklahoma City. British Journal of Psychiatry 2005 Jun;186:487-93.
North CS, Pfefferbaum B, Tivis L, Kawasaki A, Reddy C, Spitznagel EL. The course of posttraumatic stress disorder in a follow-up study of survivors of the Oklahoma City bombing. Annals of Clinical Psychiatry, 2004; 16(4): 209-215.
North CS, Pfefferbaum B, Kawasaki A, Lee S, Spitznagel EL. Psychosocial adjustment of directly exposed survivors 7 years after the Oklahoma City bombing. Comprehensive Psychiatry 2011 Jan-Feb;52(1):1-8.