Cardiovascular events are not associated with MTHFR polymorphisms, but are associated with methotrexate use and traditional risk factors in US veterans with rheumatoid arthritis

Lisa A. Davis, Grant W. Cannon, Lauren F. Pointer, Leah M. Haverhals, Roger K. Wolff, Ted R. Mikuls, Andreas M. Reimold, Gail S. Kerr, J. Steuart Richards, Dannette S. Johnson, Robert Valuck, Allan Prochazka, Liron Caplan