| web | Line R. Olsen, Mark P. Grillo | Chem Res Toxicol | 2011-04-20 |
| web | Rolf Teschke, Alexander Schwar... | Eur J Gastroenterol Hepatol | 2008-12-01 |
| web | Shari Henson | American Botanical Council | 2009-01-15 |
| web | Heather S. Oliff, PhD and Fran... | American Botanical Council | 2008-02-29 |
| web | Amy C Brown, Janet Onopa | Clin Toxicol (Phila) | 2007-08-01 |
| web | Brenda Milot, ELS | American Botanical Council | 2007-06-29 |
| web | Lim ST, Dragull K, Tang CS | Toxicol Sci | 2007-02-27 |
| web | L Sorrentino, A Capasso | Phytomedicine | 2006-09-01 |
| web | Heather S. Oliff, PhD | American Botanical Council | 2006-10-31 |
| web | | richters.com | 2005-07-05 |