[1] Univ Med Berlin, Charite, Ctr Humanities & Hlth Sci, Dept Educ Nurse & Paramed Teachers & Nursing Sci, Berlin, Germany
[2] Kulliyet El Banat Heliopolis, Cairo, Egypt
[3] Univ Groningen, No Ctr Healthcare Res, Leeuwarden, Netherlands
[4] Med Univ Graz, Dept Nursing Sci, Graz, Austria