The UCLA Population Studies of Chronic Obstructive Respiratory Disease
1994 ◽
Vol 149
(5)
◽
pp. 1209-1217
◽
1979 ◽
Vol 109
(1)
◽
pp. 33-58
◽
1985 ◽
Vol 29
(5)
◽
pp. 302
◽
1979 ◽
Vol 20
(2)
◽
pp. 403-424
◽
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