Gabriels, G. and Smith, P. (2009) “TRACE ELEMENT AND HEAVY METAL ANALYSIS OF COMMERCIAL GINSENG AND HYPOXIS SUPPLEMENT PRODUCTS”, African Journal of Traditional, Complementary and Alternative Medicines, 6, p. 411. Available at: https://athmsi.org/journals/index.php/ajtcam/article/view/806 (Accessed: 31 January 2025).