Primary adrenal insufficiency: case study IN 5 tertiary hospitals María Teresa Ovejero García; Blanca Sáez Gallego; Ana Coral Barreda Bonís; Jesús Domínguez Riscart; María Beatriz Garnier Rodríguez; Ruth Molina Suárez; Antonio De Arriba Muñoz;

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;