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. 2023 Mar 6;20(5):4624. doi: 10.3390/ijerph20054624

Table 1.

Description of the research strategies performed in each database.

Database Search Strategy
PubMed ((((microbiome or gut microbiota [Title/Abstract]) AND Clinical Trial[ptyp])) AND ((((multiple sclerosis [Title/Abstract])) AND Clinical Trial[ptyp]))
Cochrane “gut microbiota” or microbiome and “multiple sclerosis”
ProQuest “gut microbiota” or microbiome and “multiple sclerosis”
CINAHL “gut microbiota” or microbiome and “multiple sclerosis”
ScienceDirect “gut microbiota” or microbiome and “multiple sclerosis”
Scopus (TITLE-ABS-KEY (“gut microbiota”) OR TITLE-ABS-KEY (microbiome) AND TITLE-ABS-KEY (“multiple sclerosis”)) AND PUBYEAR > 2017 AND (LIMIT-TO (DOCTYPE, “ar”))