Authors DOI: https://doi.org/10.1590/S0034-89101990000200013 Downloads PDF (Portuguese) Published 1990-04-01 Issue Vol. 24 No. 2 (1990) Section Letters to the editor How to Cite (1990). Revista De Saúde Pública, 24(2), 164-164. https://doi.org/10.1590/S0034-89101990000200013 More Citation Formats ACM ACS APA ABNT Chicago Harvard IEEE MLA Turabian Vancouver AMA Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX