Risk factors for the development of early hyponatraemia in the premature infant. A review of the practice of giving sodium in the first days of life M. Rosa Pérez-Piaya; Belén Miranda-Alcalde; José M. Cárdenas-Rebollo; Mónica Riaza-Gómez; Hernán Carnicer; Gerardo Romera-Modamio;

Comparative analysis of foetal and neonatal growth curves Josep Figueras-Aloy; Montserrat Izquierdo Renau; Ana Herranz Barbero; Lourdes Urquía Martí; Fermín García-Muñoz Rodrigo; Martín Iriondo-Sanz; Óscar García Algar;

Survey on the practice of skin-to-skin contact in Spanish neonatal units during the first days of life. Influence of the presence of umbilical catheters Alicia Montaner-Ramón; Laura Merayo Fernández; Inmaculada Cosmo García; Elena Carrillo Messa; Fátima Camba Longueira;