Initial references prior to update: 37
Databases searched for update: PubMed, CINAHL
Search results of literature retrieved 5/1/2008–1/1/2019:
347 titles were selected for a full article review.
350 final studies were included after the removal of duplicates and studies that did not meet inclusion criteria and the addition of manuscripts retrieved in other topics meeting anxiety criteria.
Inclusion Criteria:
Exclusion Criteria: