000 00295nam a2200133Ia 4500
999 _c12274
_d12274
082 _a614.5
_bFLE
100 _aFletcher ,W.R
245 0 _aClinical epidemiology the essentials
250 _a4
260 _bLWW & BI pub
_c2005
300 _eNO
_a252,P.
650 _aEpidermiology
942 _cBKS