Nigerian Medical Journal would publish clinical trials that have been registered following the ICMJE requirements and recommendations - http://www.icmje.org/recommendations/browse/publishing-and-editorial-issues/clinical-trial-registration.html. Clinical trials should be registered in a public trials registry at or before the time of first patient enrollment as a condition of consideration for publication. Clinical trials that have commenced enrollment of subjects before June 2008 would be considered for publication in Nigerian Medical Journal only if they have been registered retrospectively with a clinical trial registry that allows unhindered online access to the public without charging any fees.