Yasukawa, Ken. 2015. “Inhibitory Effects of the Flower of Canadian Goldenrod (Solidago Altissima L.) on Tumour Promotion Induced by 12-O-Tetradecanoylphorbol-13-Actete”. Journal of Nutritional Therapeutics 4 (3):76-80. https://doi.org/10.6000/1929-5634.2015.04.03.1.