ChamblessDLCaputoGCBrightPGallagherR.Assessment of fear of fear in agoraphobics: The body sensations questionnaire and the agoraphobic cognitions questionnaire. J Consult Clin Psychol1984;52:1090–7.
4.
VerburgKGriezEMeijerJPolsH.Discrimination between panic disorder and generalized anxiety disorder by 35% carbon dioxide challenge. Am J Psychiatry1995;152:1081–3.