1. WorldBank. World Development Indicators [Internet]. World Bank. Available from: https://www.worldbank.org/.
2. UNDP. Human Development Reports [Internet]. United Nations Development Programme. Available from: http://hdr.undp.org/.
3. Assessment of research productivity of Arab countries in the field of infectious diseases using Web of Science database;Sweileh;Infect. Dis. Poverty,2015
4. A bibliometric analysis of toxicology research productivity in Middle Eastern Arab countries during a 10-year period (2003–2012);Zyoud;Health Res. Pol. Syst.,2014
5. Medical education research in GCC countries;Meo;BMC Med. Educ.,2015