Prevention, diagnosis and treatment of necrosing enterocolitis in newborns less than 32 weeks at birth in Spain Carlos Zozaya; Alejandro Avila-Alvarez; Iván Somoza Argibay; Fermín García-Muñoz Rodrigo; Niki Oikonomopoulou; José Luis Encinas; Miguel Saenz de Pipaón; María Luz Couce;