7Song's YouTube channel has several relevant videos: https://www.youtube.com/channel/UCQ65qItKwpGqY9d_9EFglJA/videos
Also see the resources section of his website: https://7song.com/resources/
Todd Caldecott has an article on sore throat (pharyngitis): Laryngitis and Pharyngitis: http://toddcaldecott.com/conditions/laryngitis-and-pharyngitis/