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TC.2004.009977
TC.2004.009977
http://dx.doi.org/10.1136/TC.2004.009977
"Pack year" smoking histories: what about patients who use loose tobacco?
P356
Q35539343-6ADF538C-DC0B-4C04-BA69-CF0E1484168E
P356
TC.2004.009977
http://dx.doi.org/10.1136/TC.2004.009977