الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1afc017ed69b36caa5dd7f74fe946d53Testhttps://doi.org/10.1590/s0004-27492000000100012Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doajarticles::edade0fbbf85669fff0a8a153e550423Testhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0004-27492000000100012Test
الإتاحة: http://www.scielo.br/pdf/abo/v63n1/13607.pdfTest