GRP and aortic valve calcification: The results clearly show that lower levels of GRP and Mg are independent risk factors for mitral valve calcification (ORa = 0.268, p = 0.005; ORa = 0.747, p = 0.003, respectively) and aortic valve calcification (ORa = 0.202, p = 0.022; ORa = 0.580, p = 0.008, respectively) (Table 5).