https://dentistrybook.net/dry-mouth
https://dentalsignal.com/what-you-need-to-know-about-dry-mouth/?fbclid=IwAR3XwAfazAhzDHunYw8cnm5micbXjGhNGdrTpkXszLynvUyGyExBpH_wHnM
https://www.medicalnewstoday.com/articles/283649.php