[1] Univ Houston, Dept Psychol, Houston, TX 77204 USA
[2] Univ Texas MD Anderson Canc Ctr, Dept Behav Sci, Houston, TX 77030 USA
[3] Rhode Isl Hosp, Dept Psychiat, Providence, RI USA
[4] Legacy Community Hlth Serv, Houston, TX USA
[5] Syracuse Univ, Dept Psychol, Syracuse, NY USA
[6] Asociac Ayuda, Psychotherapeut Area, Anxiety Disorders Clin, Buenos Aires, DF, Argentina
[7] Univ Santiago de Compostela, Smoking Cessat & Addict Disorders Unit, Fac Psychol, Dept Clin Psychol & Psychobiol, Santiago De Compostela, Spain