The following databases were used for reference purposes: Cumulative Index to Nursing and Allied Health Literature (Chinas/EBSCO Host), ProQuest, Google Scholar, books and other articles found when studying journals and research studies.
Við heimildaleit var notast við gagnasöfnin Cumulative Index to Nursing and Allied Health Literature (CHINAL/EBSCO Host), ProQuest, Google Scholar, bækur og aðrar greinar sem höfundur fann við lestur tímarita og rannsókna.