1. International Federation of Cervical Pathology & Colposcopy
    www.ifcpc.org
  2. WHO ICO
    www.hpvcentre.net
  3. The British Society of Colposcopy & Cervical Pathology
    www.bsccp.org.uk
  4. American Society for Colposcopy & Cervical Pathology
    www.asccp.org