DK | SE | FI | CH | BT | ID | SG | JP | |
Questionnaire (Paper) | 119 | 125 | 116 | 137 | 188 | 142 | 103 | 432 |
Questionnaire (Online) | 64 | 12 | 30 | 22 | 0 | 1 | 36 | 0 |
Interview | 10 | 3 | 10 | 10 | 10 | 10 | 10 | 0 |