The Lancet Respiratory Medicine
The Lancet Respiratory Medicine > 2013 > 1 > 2 > 148-157
The Lancet Respiratory Medicine > 2013 > 1 > 2 > 121-128
The Lancet Respiratory Medicine > 2013 > 1 > 2 > 164-174
The Lancet Respiratory Medicine > 2013 > 1 > 2 > 113-120
The Lancet Respiratory Medicine > 2013 > 1 > 2 > 158-163