Administration National Center for Biotechnology Information NCBI NLM MEDLINE humans pubmed abstract nih national institutes of health national library of medicine adult female male adolescent aged middle aged risk factors 80 and over severity of illness index anti-bacterial agents / administration & dosage* neutropenia / complications* antineoplastic agents / administration & dosage neutropenia / chemically induced predictive value of tests fever / etiology* bacterial infections / drug therapy* oral bacterial infections / etiology fever / microbiology antineoplastic agents / adverse effects* outpatients pmid:16943529 doi:10.1200/jco.2005.03.9909 jean klastersky marianne paesmans martine barette ambulatory care / methods* patient discharge patient readmission