00481nam a2200169Ia 4500008004100000020001800041082001400059100006200073245002500135250000800160260004100168300001700209650001700226650001800243650002600261650002400287170628s9999    xx            000 0 und d  a9788184731125  a614.4 ROT  aRothman, Kenneth J.; Greenland, Sander ; Lash, Timothy L.  aModern epidemiology/  a3rd  c2008aPhiladelphia:bWolters Kluwer,  aix;733p.bPB  aEpidemiology  aPublic health  aResearch--Methodology  aStatistical methods