Huppert JD, Weiss KA, Lim R, Pratt S, Smith TE. Quality of life in schizophrenia: contributions of anxiety and depression. Schizophrenia Research [Internet]. 2001;51 :171 - 180. click here for the article

Huppert JD, Bufka LF, Barlow DH, Gorman, J.M. S, M.K. & Woods SW. Therapists, therapist variables, and cognitive-behavioral therapy outcome in a multicenter trial for panic disorder. Journal of Consulting & Clinical Psychology [Internet]. 2001;69 (5) :747 - 755. click here for the article

Huppert JD, Smith TE. Longitudinal analysis of subjective quality of life in schizophrenia: anxiety as the best symptom predictor. The Journal of nervous and mental disease [Internet]. 2001;189 :669–675. click here for the article