Bibliography
http://www.springboard4health.com/notebook/v_k.html
http://www.chem.ox.ac.uk/mom/vitamins/vitamink.html
http://web.vet.cornell.edu/public/popmed/clinpath/CPmodules/coags/vitkant.htm
http://arbl.cvmbs.colostate.edu/hbooks/pathphys/misc_topics/vitamink.html