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Trends in global clinical trial registration: an analysis of numbers of registered clinical trials in different parts of the world from 2004 to 2013

Authors

  • Roderik F Viergever Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands Department of Health Services Research and Policy, London School of Hygiene and Tropical Medicine, London, UK PubMed articlesGoogle scholar articles
  • Keyang Li Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands PubMed articlesGoogle scholar articles
  1. Correspondence to Dr Roderik F Viergever; rviergever{at}research4health.org
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Citation

Viergever RF, Li K
Trends in global clinical trial registration: an analysis of numbers of registered clinical trials in different parts of the world from 2004 to 2013

Publication history

  • Received June 2, 2015
  • Revised June 30, 2015
  • Accepted July 14, 2015
  • First published September 25, 2015.
Online issue publication 
September 25, 2015
  • Supplementary Data

    This web only file has been produced by the BMJ Publishing Group from an electronic file supplied by the author(s) and has not been edited for content.

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