The Lancet Respiratory Medicine
The Lancet Respiratory Medicine > 2013 > 1 > 4 > 329-338
The Lancet Respiratory Medicine > 2013 > 1 > 4 > 301-308
The Lancet Respiratory Medicine > 2013 > 1 > 5 > 414-422
The Lancet Respiratory Medicine > 2013 > 1 > 5 > 402-413
The Lancet Respiratory Medicine > 2013 > 1 > 5 > 386-394
The Lancet Respiratory Medicine > 2013 > 1 > 5 > 377-385