Association of ENPP1 (PC-1) K121Q polymorphism with obesity-related parameters in subjects with metabolic syndrome - González-Sánchez, J L; Zabena, C; Martínez-Larrad, M T; Martínez-Calatrava, M J; Pérez-Barba, M; Serrano-Ríos, M (Clinical endocrinology, 2008)