1 Institute of Nursing Science, Department of Public Health, University of Basel, Switzerland / Academic Centre for Nursing and Midwifery, Department of Public Health and Primary Care, KU Leuven, Belgium +41 61 267 09 51.
2 Institute of Nursing Science, Department of Public Health, University of Basel, Switzerland.
3 Institute of Nursing Science, Department of Public Health, University of Basel, Switzerland / Manitoba Centre for Health Policy, Department of Community Health Sciences, University of Manitoba, Winnipeg, Canada.
4 Institute of Nursing Science, Department of Public Health, University of Basel, Switzerland / Gerontology and Geriatrics, Department of Public Health and Primary Care, KU Leuven, Belgium; and Healthcare and Ethics, Faculty of Medicine and Life Sciences, UHasselt, Belgium.
5 Department of Population Health Sciences, Duke University and Center of Innovation to Accelerate Discovery and Practice Transformation, Durham Veterans Affairs Health Care System, Durham, USA.
6 Swiss Tropical and Public Health Institute, Basel, Switzerland / University of Basel, Switzerland.