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.
Flow chart for medical surveillance to detect work-related asthma (WRA) due to aero-allergens. P(S+): probability of sensitisation assessed by a regular questionnaire; HS: high score, i.e. high probability; IS: intermediate score, i.e. intermediate probability. Adapted from [54] with permission from the publisher.
