Name Info Provider Link
Vitamin K free resource MedlinePlus Health Information https://medlineplus.gov/vitamink.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=26589481.ui
subscription/membership/fee required Wiley https://doi.org/10.1111/trf.13406