Name Info Provider Link
Dry Mouth free resource MedlinePlus Health Information https://medlineplus.gov/drymouth.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=31444791.ui
subscription/membership/fee required Wiley https://doi.org/10.1111/joor.12878
Full text from free resource Linkoping University Electronic Press http://liu.diva-portal.org/smash/get/diva2:1391078/FULLTEXT01.pdf