00468nas a2200205   4500000000100000000000100001008004100002100001300043700001400056700001400070700001400084700001600098700001800114700001600132700001300148245007000161300000900231490000800240022001400248       2006                            d1 aA. Apter1 aJ. Kinman1 aW. Bilker1 aM. Herlim1 aD. Margolis1 aE. Lautenbach1 aS. Hennessy1 aB. Strom00aIs there cross-reactivity between penicillins and cephalosporins?  a11-90 v119  a0002-9343