Références:
Department of Experimental and Clinical Pharmacology, Pomeranian University School of Medicine, Powstanców Wlkp. 72, 70-111 Szczecin, Poland.
Phytother Res. 2000 Feb;14(1):30-5.
Swedish Herbal Institute Research & Development, Spårvägen 2, SE-432 96 Åskloster, Sweden
Pharmaceuticals (Basel). 2010 Jan; 3(1): 188–224.