الإتاحة: https://doi.org/10.1093/jnci/91.9.763Testhttp://academic.oup.com/jnci/article-pdf/91/9/763/7795904/763.pdfTest
الإتاحة: https://doi.org/10.1046/j.1365-2249.1996.d01-820.xTesthttps://academic.oup.com/cei/article-pdf/106/1/13/42204670/j.1365-2249.1996.d01-820.x.pdfTest
الإتاحة: https://doi.org/10.1093/cvr/8.1.120Testhttp://academic.oup.com/cardiovascres/article-pdf/8/1/120/923677/8-1-120.pdfTest