Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KUDO Tatsuhiko and SUDO Hiroshi,Changes in Blood Levels of Vitamin K after Low-dose Administration of Natto,Japanese Journal of Thrombosis and Hemostasis,0915-7441,The Japanese Society on Thrombosis and Hemostasis,1996,7,3,239-243,https://cir.nii.ac.jp/crid/1390001204451777792,https://doi.org/10.2491/jjsth.7.239