title: [Number of authors and institutional collaboration in Spanish biomedical research papers. Evolution of the basic parameters in the period 1990-2009].
authors.affiliation: INGENIO, CSIC-Universidad Politécnica de Valencia, Valencia, España.
authors.forename: Alfredo
authors.initials: A
authors.lastname: Yegros-Yegros
authors.forename: Elena M
authors.initials: EM
authors.lastname: Tur
authors.forename: Carlos B
authors.initials: CB
authors.lastname: Amat
mesh_terms: D001319:Authorship / Q000592:standards; D035843:Biomedical Research; D003299:Cooperative Behavior; D006801:Humans; D007391:International Cooperation; D015337:Multicenter Studies as Topic / Q000639:trends; D010506:Periodicals as Topic / Q000639:trends*; D013030:Spain