1. Alexopolous, G., 1991. Anxiety and depression in the elderly. In: Salzman, C., Lebowitz, B.D. (Eds.), Anxiety in the Elderly: Treatment and Research, Springer, New York, pp. 63–77.
2. American Psychiatric Association, 1994. Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, American Psychiatric Association, Washington, DC.
3. Ballenger, J.C., 1994. Overview of the pharmacotherapy of panic disorder. In: Wolfe, B.E., Masser, J.D. (Eds.), Treatment of Panic Disorder: A Consensus Conference, American Psychiatric Press, Washington, D.C., pp. 59–72.
4. Barlow, D.H., 1988. Anxiety and its Disorders, Guilford, New York.
5. Panic disorder without fear in patients with angiographically normal coronary arteries;Beitman;J. Nerv. Ment. Dis.,1990