Co-authorship network is a kind of social network that presents significant information about collaboration among authors, which is one of the most important factors of the qualitative and quantitative growth of the scientific publication. Regarding the fact that during 2000-2012, Pharmacy and Pharmacology has had the most number of publications in WoS among institutions belonging to the Ministry of Health and Medical Education (MHME), in this research, the co-authorship network of this field

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... investigated and analyzed. The results of this study can clarify the dimensions of collaboration in the field and help research policy as well. Methods: The present study was conducted through scientometric method and social network analysis. The data were drawn from the WoS, downloaded in June 2013, and analyzed by PAJEK software. The research population included 3514 Pharmacy and Pharmacology documents published by universities affiliated to the MHME during 2012-2000. Result: The results of the study showed that the majority of collaborations of the Iranian researchers have been from England, USA and Canada, respectively. Co-authorship network of researchers consisted of 90 nodes (authors) and density degree of the network is 0.084. There is a strong linear correlation between the number of publications and degree centrality of authors at the 1 % level. Conclusion: The degree density of the network under study (.084) shows that this network has a low density. In fact, authors (nodes) in the network have had few relations with each other. This research also revealed that researchers with more publications are likely to have more collaborative works.