[1] Justus Liebig Univ Giessen, Dept Psychol & Sport 6, Professorship Psychotherapy Res, Giessen, Germany
[2] Heidelberg Univ, Dept Psychol, Heidelberg, Germany
[3] Univ Hosp Tuebingen, Dept Psychiat & Psychotherapy, Tubingen, Germany
[4] Justus Liebig Univ Giessen, Dept Psychol, Professorship Psychotherapy Res, Otto Behaghel Str 10,House F, D-35394 Giessen, Germany