Participants were asked if they had phlegm, sputum, mucus on their chest and, if so, for how long they had been afflicted by it.

This resource can be downloaded or viewed using the link: oh_phlegm.png

If you have wget available (typically on linux systems), then you can also obtain a copy using the command

 wget  -nd  biobank.ndph.ox.ac.uk/ukb/ukb/images/oh_phlegm.png