Longitudinal changes in prevalence of chronic bronchitis in rural people
Punam Pahwa, Masud Rana, Chandima Karunanayaka, Louise Hagel, Valerie Elliot, Josh Lawson, Donna Rennie, Ambikaipakan Senthilselvan, James Dosman, Saskatchewan Rural Health Study Research Team
European Respiratory Journal Sep 2016, 48 (suppl 60) PA4917; DOI: 10.1183/13993003.congress-2016.PA4917