Comparison of first, last, and longest-held jobs as surrogates for all jobs in estimating cumulative exposure in cross-sectional studies of work-related asthma
January 2008
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Annals of Epidemiology
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Benke G, Sim MR, McKenzie DP, Macfarlane E, Del Monaco A, Hoving JL, Fritschi L.
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18(1):23-7.