Table 1 Literature search strategy

(Aphthous Stomatitis[MeSH Terms] ) OR (“Haematological Parameters” [Text Word]) OR (“Zinc” [Text Word]) OR(“B12”[Text Word]) OR (“Iron” [Text Word]) OR (“Folic Acid” [Text Word]) OR (“Ferritin” [Text Word]) OR (“HB” [Text Word]) OR (“Hemoglobin” [Text Word]) ; AND (Aphthous Stomatitis[Text Word]) AND (Haematological Parameters[MeSH Terms]) OR (Aphthous Stomatitis[Text Word]) AND Zinc [MeSH Terms])]) OR (Aphthous Stomatitis[Text Word]) AND ( Iron [MeSH Terms]) OR (Aphthous Stomatitis[Text Word]) AND ( B12[MeSH Terms]) OR (Aphthous Stomatitis[Text Word]) AND ( Folic Acid [MeSH Terms]) OR (Aphthous Stomatitis[Text Word]) AND ( Ferritin [MeSH Terms]) OR (Aphthous Stomatitis[Text Word]) AND ( HB [MeSH Terms]) OR (Aphthous Stomatitis[Text Word]) AND ( Hemoglobin [MeSH Terms]) AND (Filters: Publication date up to Sep 2023) AND ( Filters: English Language)