Table 1. The main keywords and their subsets .

Keywords	Synonyms
Health Information Systems	• Health Information System • Information System, Health • Information Systems, Health • System, Health Information • Systems, Health Information • Health Information System • Healthcare Information System • Health Information Systems • Healthcare Information Systems • Medical information system • Laboratory information system • Clinical information system • Pharmacy information system • Nursery information system • Electronic Health Record • Electronic Medical Record
Challenge	• Problem • Dispute • Obstacles
Failure	• Defeat • Setback • losing
Success	• Achievement • Prosperity • hit
Developing Countries	• Least Developed Countries • Less Developed Countries • Under Developed Nations • Third-World Countries • Third-World Nations • Under Developed Countries • Developing Nations • Less Developed Nations • Low and Middle income Countries