1. Novotny JA, Kurilich AC, Britz SJ, Baer DJ, Clevidence BA: Vitamin K absorption and kinetics in human subjects after consumption of 13C-labelled phylloquinone from kale. Br J Nutr. 2010 Sep;104(6):858-62. doi: 10.1017/S0007114510001182. Epub 2010 Apr 27. [PubMed:20420753 ]