Metabolic syndrome in Spanish adolescents and its association with birth weight, breastfeeding duration, maternal smoking, and maternal obesity: a cross-sectional study - Gonzalez-Jimenez, Emilio; Montero-Alonso, Miguel A; Schmidt-RioValle, Jacqueline; Garcia-Garcia, Carmen J; Padez, Cristina (EUROPEAN JOURNAL OF NUTRITION, 2015)