Fuady, A., Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands, Department of Community Medicine, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Houweling, T.A.J., Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands; Richardus, J.H., Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands