<https://ihs-headache.org/ru/#website>
<http://schema.org/description>
"IHS is an international professional organisation working with others for the benefit of people affected by headache disorders. As a charity, the purpose of IHS is to advance headache science, education, and management, and promote headache awareness worldwide."
<https://ihs-headache.org/ru/news/ihs-video-chronic-daily-headache/>