As more people join this study and our research scientists start to look at the data, there may be an opportunity to participate in additional studies to enhance the research for these diseases and other rare diseases. For example, we may also ask you to complete short follow-up surveys regarding your experience with the disease over time. If there are any additional study or survey opportunities, 23andMe's Health + Ancestry Service will let you know about them through your 23andMe.com account and/or email.