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1
2533444
2533444
http://dx.doi.org/10.2307/2533444
Robust variance estimation for the case-cohort design.
P356
Q52364585-1E1E1CF7-E3B4-4DDE-B0A3-426119639020
P356
2533444
http://dx.doi.org/10.2307/2533444