1. Skaraborg Institute for Research and Development, Skövde, Sweden; Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden
2. Department of Curriculum Studies and Teacher Education, Texas Tech University, USA
3. Uppsala University, Uppsala, Sweden
4. Dedan Kimathi University of Technology, Nyeri, Kenya
5. Royal Institute of Technology, Stockholm, Sweden
6. Skaraborg Institute for Research and Development, Skövde, Sweden; Department of Psychology, Lund University, Lund, Sweden