<https://valdai.su/gipertoniya/serdechnaya-nedostatochnost-aritmiya.html#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/WebPage>
<https://valdai.su/gipertoniya/serdechnaya-nedostatochnost-aritmiya.html>