000			00568nam a2200205Ia 4500
008			140601s2007 xx 000 0 und d
020			_a9780198529552
041			_aEnglish
060			_aWA 950 2007CR
100			_aElwood, J. Mark.
245			_aCritical appraisal of epidemiological studies and clinical trials.
250			_a3rd
260			_aOxford _bOxford University Press, _c2007
300			_a570p.
365			_e
650			_aClinical Trials
650			_aEpedemiology - Research - Methodology
650			_aEpidemiologic Methods
942			_2nlm _cBK
999			_c7232 _d7232