00343nam a2200121Ia 4500008004100000040003800041100001700079245003600096250000800132260004800140300001700188653001600205211231s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aSzklo,Moyses 0aEpidemiology: beyond the basics  a2nd  bJones and Bartlett PublishersaBostonc2007  axiii,489p p.  aEpidemology