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Table 1 Example for Keywords combinations

From: Effect of attachment-based interventions on prenatal attachment: a protocol for systematic review

Maternal/Paternal And Attachment AND/OR Fetus
Prenatal /Pregnancy AND Attachment
Parental/Expectant Mother/Father AND Attachment
Paternal/Maternal AND Attachment
Maternal/Paternal AND Fetal AND Relation
Prenatal/Pregnancy AND Relationship
Mother/father AND Fetal AND Relation
Mother/Father AND Fetal AND Attachment
Similar phrases and Persian synonyms were also will be used.