000 00628nam a2200217 4500
003 KMLcat
008 151216b xxu||||| |||| 00| 0 eng d
020 _a0192627449(pbk)
041 _aEng
082 _a614.4028
_bELW
100 _aElwood, J. Mark
_913249
245 _aCritical appraisal of epidemiological studies and clinical trials
250 _a2nd ed.
260 _c1998
_aOxford
_bOxford University Press
_g1998
300 _ax,448 p.
_c24 cm.
650 _aEPIDEMIOLOGY
655 _aEpidemiological Studies
_913254
655 _aClinical Trials
_913255
655 _aResearch methods
_91851
942 _cSPR
_2ddc
999 _c799
_d799