- Hellenic Cancer Federation (ELLOK) is the voice of cancer patients in Greece, serving as a nationwide organization that unites and represents associations and organizations working in the field of cancer prevention and treatment. With a vision to fully support patients and their families, as well as to ensure access to quality healthcare services for all, ELLOK strives to raise awareness in society, promote research and advocate for access to innovative therapies. Through collaboration with government bodies, healthcare professionals, and scientific organizations, ELLOK works towards the development of health policies that place the patient at the center and promote equality in healthcare.