Authors DOI: https://doi.org/10.1590/S0034-89101972000200014 Downloads PDF (Portuguese) Published 1972-06-01 Issue Vol. 6 No. 2 (1972) Section Abstracts How to Cite (1972). Revista De Saúde Pública, 6(2), 235-235. https://doi.org/10.1590/S0034-89101972000200014 More Citation Formats ACM ACS APA ABNT Chicago Harvard IEEE MLA Turabian Vancouver AMA Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX