000 00299nam a2200133Ia 4500
008 200512s9999 xx 000 0 und d
082 _a614.5
100 _aFletcher
245 0 _aClinical Epidemiology:The Essentials
250 _a4
260 _bLWW
_c2011
440 _v-
650 _aepidemiology
999 _c56202
_d56202