The Lancet Respiratory Medicine
The Lancet Respiratory Medicine > 2014 > 2 > 6 > 497-506
The Lancet Respiratory Medicine > 2014 > 2 > 6 > 464-471
The Lancet Respiratory Medicine > 2014 > 2 > 6 > 445-454
The Lancet Respiratory Medicine > 2014 > 2 > 6 > 487-496
The Lancet Respiratory Medicine > 2014 > 2 > 6 > 455-463
The Lancet Respiratory Medicine > 2014 > 2 > 6 > 472-486