Maria-Eulàlia Juvé-Udina; Núria Fabrellas-Padrés; Pilar Delgado-Hito; Bárbara Hurtado-Pardos; Montserrat Martí-Cavallé; Marta Gironès-Nogué; Rosa-Maria García-Berman; Sergio Alonso-Fernandez "Newborn physiological immaturity: a concept analysis." Advances in Neonatal Care 15 (2015): 86-93.