Trends in the lifetime risk of COPD exacerbation requiring hospitalisation
Jesper Lykkegaard, René dePont Christensen, Jesper Rømhild Davidsen, Henrik Støvring, Morten Andersen, Jens Søndergaard
European Respiratory Journal 2013 42: 964-971; DOI: 10.1183/09031936.00129312