Umbrella review on the management of xerostomia and hyposalivation - what evidence do we have so far?

Supplementary data for the umbrella review on the management of dry mouth. Includes the individual excluded studies with reasons, characteristics of the included studies, population and treatments, outcome measures, follow-up, main results and conclusions. Also, it includes the assessment of the reviews with AMSTAR 2, the PRISMA checklist for abstracts and for scoping reviews.