TY - JOUR AU - Classen, DC; Pestotnik, SL; Evans, RS; Lloyd, JF; Burke, JP TI - Adverse drug events in hospitalized patients. Excess length of stay, extra cost, and attributable mortality JO - JAMA IS - 04 VL - 277 PY - 1997 DO - 10.1001/jama.1997.03540280039031 L3 - PubMed-ID: 9002492 SP - 301 EP - 6. N1 - Jan 22-29; ER -