Materials

• GGS Belgium - Wave 1 - Introductory letter (NL)
• GGS Belgium - Wave 1 - Introductory letter (FR)
• GGS Belgium - Wave 1 - Informed consent letter (NL)
• GGS Belgium - Wave 1 - Informed consent letter (FR)
• GGS Belgium - Wave 1 - Guidelines for the interviewers 1 (NL)
• GGS Belgium - Wave 1 - Guidelines for the interviewers 1 (FR)
• GGS Belgium - Wave 1 - Guidelines for the interviewers 2 (NL)
• GGS Belgium - Wave 1 - Guidelines for the interviewers 2 (FR)
• GGS Belgium - Wave 1 - Questionnaire (NL)
• GGS Belgium - Wave 1 - Questionnaire (FR)
• GGS Belgium - Wave 1 - Show cards (NL)
• GGS Belgium - Wave 1 - Show cards (FR)
• GGS Belgium - Wave 1 - Code book (NL/FR)
• GGS International - Wave 1 - Code book (EN)