Epidemiology and risk factors for bronchopulmonary dysplasia in preterm infants born at or less than 32 weeks of gestation Andrea Sucasas Alonso; Sonia Pértega Diaz; Rebeca Sáez Soto; Alejandro Avila-Alvarez;

Lung function and sleep-disordered breathing in preschoolers born very preterm Alfredo Cano; Isabel Bullón González; Pilar Andrés Porras; Silvia Pérez Porra; Ana Martínez Flórez; Raquel Izquierdo Caballero; Nuria Díez Monge;

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;