The process of registration of clinical trials is the publication in an accessible public database, a group of data regarding the design, conduct and management of a clinical trial. This respond to a condition issued by the International Committee of Medical Journal Editors that to accept the publication of the results of a trial, it must have been registered in a public database before the inclusion of the first patient, in order to avoid falsification or concealment of unfavorable results and ensure transparency and credibility of clinical research. Since 2008 this was included as an ethical requirement in the Declaration of Helsinki (World Medical Association) and the World Health Organization has created an International Registry Platform that is a common access point to different registries.