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  1. Clinical trials - World Health Organization (WHO)

  2. Coronavirus disease (COVID-19): Vaccine research and development

  3. How are vaccines developed? - World Health Organization (WHO)

  4. Ethical considerations - World Health Organization (WHO)

  5. Guidance for best practices for clinical trials

  6. Number of clinical trials by year, country, region and income group

  7. Clinical trials - World Health Organization (WHO)

  8. New global guidance puts forward recommendations for more …

  9. A starting point, not an endpoint: WHO's new clinical trials …

  10. Number of clinical trial registrations by location, disease, phase of ...