Risk Factors for Chronic Bronchitis and Chronic Obstructive Lung Disease
2000 ◽
Vol 108
(suppl 4)
◽
pp. 733-742
◽
1991 ◽
Vol 624
(1)
◽
pp. 7-17
◽
1976 ◽
Vol 10
(4)
◽
pp. 200-205
2010 ◽
Vol 13
(Suppl 4)
◽
pp. P232
◽
2016 ◽
Vol 8
(6)
◽
pp. 1274-1282
◽