- Correspondence to Anita Romijn, Department of Public and Occupational Health, Amsterdam Public Health research institute, VU University Medical Center, 1081 BT Amsterdam, Netherlands;
- Received 13 December 2016
- Revised 28 June 2017
- Accepted 21 July 2017
- Published in print 11 November 2017.
- Published online 13 November 2017.
- Published first 26 September 2017.
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