Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Longitudinal overview of the cohort and the main outcomes of the study. Multiple breath washout (MBW) was performed annually between 1999–2012 and every 6 months between 2013 and 2016. Chest CT was performed from the age of 6 years and repeated every third year.
