[1] Univ Ghent, Dept Special Educ, B-9000 Ghent, Belgium
[2] Columbia Univ, Med Ctr, Populat & Family Hlth, New York, NY USA
[3] Univ Ghent, Dept Orthopedag, B-9000 Ghent, Belgium
[4] Univ Ghent, Dept Orthopedag Special Educ, B-9000 Ghent, Belgium
[5] Univ Ghent, Ctr Children Vulnerable Situat, B-9000 Ghent, Belgium
[6] Univ Ghent, Dept Social Welf Studies, Intercultural Pedag, B-9000 Ghent, Belgium