[1] Harvard Univ, Harvard TH Chan Sch Publ Hlth, Harvard Global Nursing Leadership Program, Boston, MA 02115 USA
[2] Harvard Univ, Harvard TH Chan Sch Publ Hlth, Dept Hlth Policy & Management, Boston, MA 02115 USA
[3] WHO, Reg Off Eastern Mediterranean, Nursing Midwifery & Allied Hlth Personnel, Cairo, Egypt