In the third survey wave of gsl2012, a standardized paper questionnaire and an online questionnaire were used as survey instruments. But I can only select one type. Can we implement a multiple selection?
For now I add an annotation on the instrument detail page to clarify this.
In the third survey wave of gsl2012, a standardized paper questionnaire and an online questionnaire were used as survey instruments. But I can only select one type. Can we implement a multiple selection?
For now I add an annotation on the instrument detail page to clarify this.