1 1 Institute of Nursing Science, Department Public Health, University of Basel, Basel, Switzerland.
2 2 Academic Centre for Nursing and Midwifery, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium.
3 3 Durham Centre of Innovation to Accelerate Discovery and Practice, Transformation (ADAPT), Duke University School of Medicine, Durham, North Carolina, USA.
4 4 Center for Health Services Research in Primary Care at Durham Veterans Affairs Health Care System, Durham, NC, USA.
5 5 School of Nursing, University of Pittsburgh, Pittsburgh, USA.
6 6 Centre for Health Economics and Medicines Evaluation, Bangor University, Bangor, Gwynedd, North Wales, UK.
7 7 Brown University School of Public Health, Providence, Rhode Island, USA.