Table 1

Different syntax used to search

DatabaseThe syntax used to search
MEDLINE (PubMed)(((Schizophrenia) OR (Psychosis) OR (Mental disorder) OR (Mental illness)) AND ((genome wide DNA methylation) OR (genome-wide DNA methylation) OR (epigenome wide DNA methylation) OR (epigenome-wide DNA methylation) OR (genome wide methylation) OR (genome-wide methylation) OR (epigenome wide methylation) OR (epigenome-wide methylation) OR (whole genome DNA methylation) OR (whole-genome methylation)))
Scopus and Web of science(((schizophrenia) OR (psychosis) OR (mental AND disorder) OR (mental AND illness)) AND ((genome AND wide AND dna AND methylation) OR (genome-wide AND dna AND methylation) OR (epigenome AND wide AND dna AND methylation) OR (epigenome-wide AND dna AND methylation) OR (genome AND wide AND methylation) OR (genome-wide AND methylation) OR (epigenome AND wide AND methylation) OR (epigenome-wide AND methylation) OR (whole AND genome AND dna AND methylation) OR (whole-genome AND methylation)))