Breastfeeding duration and nutritional status of infants and toddlers in Spain. LAyDI study (PAPenRed) Silvia Martín-Ramos; Begoña Domínguez-Aurrecoechea; Manuela Sánchez Echenique; Rubén Garcia Pérez; Alicia Bonet Garrosa; Gonzalo Solís-Sánchez;