JAMA Network Open
https://www.researchpad.co/tools/openurl?pubtype=&doi=10.1001/jamanetworkopen.2020.5316&title=Association of Homocysteine, Methionine, and <i>MTHFR</i> 677C&gt;T Polymorphism With Rate of Cardiovascular Multimorbidity Development in Older Adults in Sweden&author=&keyword=&subject=