2020 Updates:
- BOSS: The 10-year follow-up examination phase concluded in September 2017.
- EHLS: The 21-year follow-up examination phase concluded in 2016.
- Although we are not actively collecting new study data at this time, the studies are not coming to an end. The researchers are currently analyzing the data that were collected in both the EHLS and BOSS and publishing the findings. Grant applications to continue this research are under review at the National Institutes of Health. .