The use of data bases and historical controls in treatment comparisons (Q36436775)
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(P31) (Q13442814)
(P304) 95-98
(P478) 111
(P577) Friday, January 1, 1988
(P1433) (Q26842185)
(P1476) "The use of data bases and historical controls in treatment comparisons" (language: en)
(P2093) D P Byar
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