title: Iranian Nephrology and Urology Research Output in the Past Two Decades: A Bibliographic Analysis of Medline Database.
abstract: BACKGROUND
  We performed a bibliometric search to evaluate the number of papers published in the field of nephrology and urology by Iranian researchers in the past two decades.
  
  
  METHODS
  We did an online search in abstract/title part of articles with 129 keywords such as kidney, renal, hemodialysis, transplant, nephrology, glomerulonephritis, ureteral, nephrolithiasis, and etc. Endnote software version 7 was used to search articles published in PubMed database from November 1993 to November 2013. Those articles in which Iran was the affiliation of at least one of the authors were selected. These articles in the field of nephrology and urology were analyzed regarding the name of originated institution, field of study, total number of publications, type of study, collaboration rate of Iranian nephrologist and urologists for every year, annual sharing of Iranian articles in five journals with highest impact factor (IF) and journal IF.
  
  
  RESULTS
  The total number of publications in the field of nephrology and urology was 3,771 (average of 189 papers per year). Most of the Iranian nephrology and urology papers were from the capital city, Tehran (50.03%). There was an increasing trend in the number of publications over the years. Most papers were about transplantation (44.6%), nephrology (20.9%) and hemodialysis (16.4%). Of all, 53.7% were retrospective articles, whereas the proportion of clinical trials was relatively small (10.8%).
  
  
  CONCLUSIONS
  Although Iranian publications in the field of nephrology and urology have had a considerable and significant increase in the recent years amongst the Middle Eastern countries, there is a wide distance to be a science exporter country.
authors.affiliation: Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, IR Iran.
authors.forename: Behzad
authors.initials: B
authors.lastname: Einollahi
authors.affiliation: Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, IR Iran.
authors.forename: Mohsen
authors.initials: M
authors.lastname: Motalebi
authors.affiliation: Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, IR Iran.
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Taghipour
authors.affiliation: Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, IR Iran.
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Ebrahimi
keywords: Bibliographic; Nephrology; Transplantation; Urology