1 Department of Epidemiology and Data Science, Amsterdam Public Health Research Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
2 Department of Philosophy, Faculty of Humanities, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
3 Health Services Research Unit, IMIM-Hospital del Mar Medical Research Institute, CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.
4 Department of Health Services, University of Washington, Seattle, WA, USA.