Factor structure, reliability, and item parameters of the Brazilian-Portuguese version of the GAD-7 questionnaire"
Journal article published in 2015 by
André Luiz Moreno,
Ana Maria Frota Lisbôa Pereira Souza,
Diogo Araújo DeSousa,
Giovanni Abrahão Salum,
Gisele Gus Manfro,
Silvia Helena Koller,
Flávia L. Osório,
Flávia de Lima Osório 
,
José Alexandra S. Crippa,
José Alexandre de Souza Crippa,
Ana Maria F. L. Pereira de Souza
,
José Alexandra S. Crippa,
José Alexandre de Souza Crippa,
Ana Maria F. L. Pereira de Souza
