POSSIBILITY OF SELECTION BIAS IN MATCHED CASE-CONTROL STUDIES USING FRIEND CONTROLS1
1986 ◽
Vol 124
(1)
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pp. 150-153
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1989 ◽
Vol 130
(1)
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pp. 208-210
Keyword(s):
2013 ◽
Vol 119
◽
pp. 185-199
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1981 ◽
Vol 30
(2)
◽
pp. 190
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Keyword(s):
2009 ◽
Vol 30
(5)
◽
pp. 480-483
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Keyword(s):