OK so I have a language switcher taghelper that generates an unordered list of languages/cultures like so. Is there anything else that would need to be done to the markup to ensure its accessible/best practise?

<ul><li><a class="selected" href="https://localhost:44331/en" hreflang="en-US" lang="en-US">English</a></li><li><a href="https://localhost:44331/dk" hreflang="da-DK" lang="da-DK">dansk</a></li></ul>