1. School of Social Work, University of Texas, Arlington, USA
2. Department of Social Medicine and Healthcare Organization, Medical University – Varna, Varna, Bulgaria
3. Factor Inwentash Faculty of Social Work, University of Toronto, Ontario, Canada
4. Department of Industrial, Manufacturing, & Systems Engineering, The University of Texas at Arlington, Arlington, USA
5. School of Social Work, University of Illinois Urbana-Champaign, Urbana, USA
6. Bernard Becker Medical Library, Washington University School of Medicine, St. Louis, MO, USA