Polymorphism C776G in the transcobalamin II gene and homocysteine, folate and vitamin B12 concentrations. Association with MTHFR C677T and A1298C and MTRR A66G polymorphisms in healthy children - Alésio, Ana C. M.; Höehr, Nelci F.; Siqueira, Lúcia H.; Bydlowski, Sérgio P.; Annichino-Bizzacchi, Joyce M. (Thrombosis Research, 2007)