Information for Those Receiving a Questionnaire
Need for both twins to participate: Since the main advantage of studying twins is to be able to compare disease and exposure experience within pairs, it is very important to have information about both twins, preferably. While information from one twin is also valuable, we strongly encourage both twins to participate!
Benefits of participation: We can’t pay you or promise you instant results regarding a disease you may have a particular interest in; however we can assure you that your participation will be a very valuable contribution to the scientific study of causes of disease. We are planning to provide a service to twins who want to verify their zygosity (i.e. whether they are identical or fraternal), by offering zygosity testing at a nominal fee. We will let you know by the website when this becomes available.