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.
Schematic illustration of the overlap between the 3 sub-groups of severe recurrent wheezing (RW). A total of 44,984 RW infants were included in ≥1 severity sub-groups; the proportion of infants in each subgroup, as well as overlap (% of those with severe RW) is indicated.
