To the Editor: We studied all active-duty Persian Gulf War–era veterans who remained on active duty at the conclusion of deployment (July 31, 1991), not as Leisure et al. stated in their letter “selected, mostly healthy, active-duty Persian Gulf War veterans enlisted as of 1994.” Our study was restricted to hospitalizations of active-duty service members because these were the only service memb...

the arabic word “wadi”, which was clearly understood by the arab nomads, had not been used in the ancient persian texts. the first uses of this word in the persian works go back to late third century after hijrah, when the translators had to find equivalents for ten qur’anic usages of the word. the present research aims to study which equivalents were employed in different periods for this word...