1. American Psychiatric Association (1980) Diagnostic and statistical manual of mental disorders, (DSM-III), 3rd edn., American Psychiatric Press, Washington, DC
2. American Psychiatric Association (1987) Diagnostic and statistical manual of mental disorders, (DSM-III-R), 3rd edn, revised. American Psychiatric Press, Washington, DC
3. American Psychiatric Association (1994) Diagnostic criteria from DSM-IV. American Psychiatric Press, Washington DC
4. Aronson TA (1987) Is panic disorder a distinct diagnostic entity? J Nerv Ment Dis 175:584–594
5. Ballenger JC, Burrows GD, Du Pont RL, Lesser IM, Noyes R, Pecknold JC, Rifkin A, Swinson RP (1988) Alprazolam in panic disorder and agoraphobia: results from a multicenter trial. Arch Gen Psychiatry 45:413–422