GABRIELS, G.; SMITH, P. TRACE ELEMENT AND HEAVY METAL ANALYSIS OF COMMERCIAL GINSENG AND HYPOXIS SUPPLEMENT PRODUCTS. African Journal of Traditional, Complementary and Alternative Medicines, [S. l.], v. 6, p. 411, 2009. Disponível em: https://journals.athmsi.org/index.php/ajtcam/article/view/806. Acesso em: 7 may. 2024.