U. Niaz, S. Hassan, M. Hassan, H. Hussain, and Shahnaz Ahad, “PREVALENCE OF POST-TRAUMATIC STRESS DISORDER AND CO-MORBID DEPRESSION IN EARTHQUAKE SURVIVORS IN NWFP, PAKISTAN: A PRELIMINARY STUDY”, J Pak Psychiatr Soc, vol. 3, no. 02, pp. 98-101, Dec. 2006.