The Lancet Respiratory Medicine
The Lancet Respiratory Medicine > 2013 > 1 > 5 > 369-376
The Lancet Respiratory Medicine > 2013 > 1 > 5 > 395-401
The Lancet Respiratory Medicine > 2013 > 1 > 6 > 471-478
The Lancet Respiratory Medicine > 2013 > 1 > 6 > 462-470
The Lancet Respiratory Medicine > 2013 > 1 > 6 > 453-461
The Lancet Respiratory Medicine > 2013 > 1 > 6 > 445-452
The Lancet Respiratory Medicine > 2013 > 1 > 6 > 479-487