Citation

Valentova K, Stejskal D, Bartek J, Dvoráckova S, Kren V, Ulrichova J, Simanek V. Maca (Lepidium meyenii) and yacon (Smallanthus sonchifolius) in combination with silymarin as food supplements: in vivo safety assessment. Food and Chemical Toxicology 2008;46(3):1006-1013.