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   Guylaine Ferland et al, 2016, Nutrients CrossRef
2. Menaquinone-4 Amplified Glucose-Stimulated Insulin Secretion in Isolated Mouse Pancreatic Islets and INS-1 Rat Insulinoma Cells
   Hsin-Jung Ho et al, 2019, IJMS CrossRef
3. The Role of Vitamin K in Humans: Implication in Aging and Age-Associated Diseases
   Daniela-Saveta Popa et al, 2021, Antioxidants CrossRef
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   Katharina Nimptsch et al, 2009 CrossRef