Authors DOI: https://doi.org/10.1590/S0034-89101969000200015 Downloads PDF (Portuguese) Published 1969-12-01 Issue Vol. 3 No. 2 (1969) Section Abstracts How to Cite (1969). Revista De Saúde Pública, 3(2), 245-248. https://doi.org/10.1590/S0034-89101969000200015 More Citation Formats ACM ACS APA ABNT Chicago Harvard IEEE MLA Turabian Vancouver AMA Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX