1. School of Nursing, Federal University of Rio Grande do Sul (UFRGS) and Anxiety Disorders Program of Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil;
2. Federal University of Health Sciences of Porto Alegre (UFCSPA) and Anxiety Disorders Program of Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil;
3. Research and Graduate Group, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil;
4. Federal University of Rio Grande do Sul (UFRGS) and Anxiety Disorders Program of Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil;
5. Federal University of Rio Grande do Sul (UFRGS), Anxiety Disorders Program of Hospital de Clínicas de Porto Alegre and Graduation in Medicine of Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil;
6. School of Nursing, Federal University of Rio Grande do Sul (UFRGS) and Anxiety Disorders Program of Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil