1. Kilimanjaro Clinical Research Institute/Kilimanjaro Christian Medical Center; Moshi, Tanzania.
2. School of Psychology, Open University, Heerlen, The Netherlands.
3. MaastrichtUniversity, Faculty of Psychology and Neuroscience, Maastricht, The Netherlands.
4. Wageningen University, Communication Science, Wageningen, The Netherlands.
5. Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands.
6. Aberdeen Health Psychology Group, Institute of Applied Health Sciences, University of Aberdeen Forester Hill, Scotland, United Kingdom.