• R Aleixandre Benavent, J González de Dios, A Alonso Arroyo, M Bolaños Pizarro, L Castelló Cogollos, G González Alcaide, A Vidal Infer, C Navarro Molina, S Coronado Ferrer, M González Muñoz, and S Málaga Guerrero.
• Unidad de Información e Investigación Social y Sanitaria, Universitat de València- Centro Superior de Investigaciones Científicas (CSIC), Instituto de Historia de la Medicina y de la Ciencia (IHMC) López Piñero, Valencia, España.
• An Pediatr (Barc). 2013 Jun 1; 78 (6): 410.e1-11.

IntroductionScientific collaboration is very important, as it is the basis of the scientific development of every discipline. The aim of this paper is to identify the indicators of scientific collaboration and co-authorship networks of Spanish researchers and institutions publishing in national and international paediatric, multidisciplinary or other knowledge areas journals during the period 2006-2010.MethodsThe papers studied were obtained from the databases including, Science Citation Index Expanded, Scopus, Índice Médico Español and Índice Bibliográfico Español en Ciencias de la Salud, by means of applying different search profiles. All the papers signed by co-authors were quantified in order to identify the authorship and institutional collaboration networks. Furthermore the degree, betweenness index, and closeness index were obtained as a measurement of the structural analysis. Co-authorships were represented graphically by the network analysis and display software Pajek.ResultsA total of 7971 articles were published during the period 2006-2010, with 90.55% completed in collaboration. Using a threshold of 10 or more co-authorships, 77 research groups in Pediatrics were identified. Most papers were published in collaboration between institutions of the same Autonomous Community (42.28%), and 14.84% with international collaboration. The analysis of institutional participation enabled a large nucleus or institutional collaboration network to be identified, with 52 linked institutions. International collaboration was led by the USA and European countries, such as United Kingdom, Germany and Italy.DiscussionAuthors, institutions and the most active working groups in Spanish pediatrics were identified, which is very interesting information to establish contacts to increase the existing networks, to prevent redundancies, and to take advantage of the new emerging groups. It is necessary to promote the collaboration of Spanish researchers, especially with their international colleagues, since a positive relationship is found between international collaboration and quality and impact of publications measured by citation analysis.Copyright © 2013 Asociación Española de Pediatría. Published by Elsevier España, S.L. All rights reserved.

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