Effects of vitamin K2 (menatetrenone) on atherosclerosis and blood coagulation in hypercholesterolemic rabbits - Kawashima, H; Nakajima, Y; Matubara, Y; Nakanowatari, J; Fukuta, T; Mizuno, S; Takahashi, S; Tajima, T; Nakamura, T (Jpn J Pharmacol, 1997)