Sarah M Van de Velde1, Nina Van Eekert2,3. 1. Department of Sociology, Centre for Population, Family and Health, University of Antwerp, Sint-Jacobstraat 2-4, 2000, Antwerp, Belgium. sarah.vandevelde@uantwerpen.be. 2. Department of Sociology, Centre for Population, Family and Health, University of Antwerp, Sint-Jacobstraat 2-4, 2000, Antwerp, Belgium. 3. International Centre for Reproductive Health, Ghent University, Ghent, Belgium.