Table 1.

Inclusion and exclusion criteria according to PICOS.

Parameter	Inclusion Criteria	Exclusion Criteria
Population	Patients with autoimmune thyroid diseases, including Graves’ disease and Hashimoto’s thyroiditis—aged from 0 to 99 years, both genders	Patients with other autoimmune diseases
Intervention	Not applicable
Comparison	Not applicable
Outcomes	Salivary alterations quantitative (e.g., hyposalivation) and/or qualitative (e.g., biomolecules)	Other salivary alterations (e.g., microbiota)
Study design	Case-control, cohort and cross-sectional studies	Literature reviews, case reports, expert opinion, letters to the editor, conference reports
	Published until 27th September 2022	Not published in English