1. General Regulatory Council for Complementary Therapies GRCCT (www.grcct.org)
  2. British Complementary Medicine association (www.bcma.co.uk)
  3. Hiruline corporation (http://hiruline.com/en/)
  4. Academy of Hirudotherapy St. Peterburg, Russia (www.academia-hirudo.ru)
  5. Polish association of Hirudotherapy (www.parmed.pl)
  6. American association of Hirudotherapy (www.academyofhirudotherapy.org)
  7. Spanish association of Hirudotherapy (www.hirudoterapia.org)
  8. Moscow Alliance of Hirudotherapists
  9. Cadanian Association of Hirudotherapists
  10. Indian Association of Hirudotherapists
  11. UAE Association of Hirudotherapists