TY - BOOK AU - Elwood,J.Mark AU - Elwood,J.Mark TI - Critical appraisal of epidemiological studies and clinical trials SN - 0192627457 (hbk) AV - RA652.4 .E483 1998 U1 - 614.4 ELW 21 PY - 1998/// CY - Oxford, New York PB - Oxford University Press KW - Epidemiology KW - Research KW - Methodology KW - Clinical trials KW - Evaluation KW - Diseases KW - Causes and theories of causation KW - Epidemiologic Methods KW - Clinical Trials N1 - Rev. ed. of: Causal relationships in medicine / J. Mark Elwood. 1988; Includes bibliographical references (p. 359-371) and index UR - http://www.loc.gov/catdir/enhancements/fy0605/97022473-d.html UR - http://www.loc.gov/catdir/enhancements/fy0605/97022473-t.html ER -