Sánchez Ferrer FJ, González de Caldas Marchal R, Schneider S. Clinical ultrasound: a diagnostic test or a part of the routine exam? Rev Pediatr Aten Primaria. 2014;16:361-5.

Hernández Delgado MJ, Sánchez Pina C, Hernando Helguero P, Lorente Miñarro M, Carrasco Sanz Á, Rodríguez Delgado J, et al. Debate on the training of pediatric residents: results of the survey on pediatricians, teaching collaborators in the Community of Madrid. Rev Pediatr Aten Primaria. 2012;14:e13-e18.