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WHO calls for all trials to be registered.
On 14 April 2015 the World Health Organisation issued its firmest statement yet on the need for clinical trials registration. “Before any clinical trial is initiated (at any Phase) its details are to be registered in a publicly available, free to access, searchable clinical trial registry complying with WHO’s international agreed standards. The clinical trial registry entry should be made before the first subject receives the first medical intervention in the trial.” The statement says that all completed or suspended trials must be reported both in the peer reviewed literature and on the trials registry site. There are no exceptions. The statement has been widely welcomed by researchers.