The Lancet Respiratory Medicine
The Lancet Respiratory Medicine > 2014 > 2 > 8 > 611-620
The Lancet Respiratory Medicine > 2014 > 2 > 8 > 631-637
The Lancet Respiratory Medicine > 2014 > 2 > 8 > 638-646
The Lancet Respiratory Medicine > 2014 > 2 > 8 > 621-630
The Lancet Respiratory Medicine > 2014 > 2 > 8 > 647-656
The Lancet Respiratory Medicine > 2014 > 2 > 8 > 657-670