Authors DOI: https://doi.org/10.1590/S0034-89101988000600010 Downloads PDF (Portuguese) Published 1988-12-01 Issue Vol. 22 No. 6 (1988) Section Letters to the editor How to Cite (1988). Revista De Saúde Pública, 22(6), 548-548. https://doi.org/10.1590/S0034-89101988000600010 More Citation Formats ACM ACS APA ABNT Chicago Harvard IEEE MLA Turabian Vancouver AMA Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX