Veras RP, Coutinho E, Ney Jr. G. The elderly population of Rio de Janeiro (Brazil): pilot-study as to the trustworthiness and validity of the mental health segment of the BOAS questionnaire . Rev. saúde pública [Internet]. 1990 Apr. 1 [cited 2024 May 19];24(2):156-63. Available from: https://www.revistas.usp.br/rsp/article/view/23728