¿øº» ³í¹®: Archives of General Psychiatry 2003;60:618-626. Folate, Vitamin B12, Homocysteine, and the MTHFR 677CT Polymorphism in Anxiety and Depression: The Hordaland Homocysteine Study Ingvar Bjelland; Grethe S. Tell; Stein Emil Vollset; Helga Refsum; Per Magne Ueland