respiration Administration National Center for Biotechnology Information NCBI NLM MEDLINE humans pubmed abstract nih national institutes of health national library of medicine treatment outcome female male Infant Comparative Study Prospective Studies newborn Multicenter Study inhalation Artificial severity of illness index case-control studies Cohort Studies respiratory syncytial virus infections / therapy multivariate analysis aerosols antiviral agents / administration & dosage antiviral agents / therapeutic use* ribavirin / administration & dosage ribavirin / therapeutic use* respiratory syncytial virus infections / drug therapy* respiratory syncytial virus infections / mortality respiratory syncytial virus human* respiratory syncytial virus infections / complications pmid:8774517 doi:10.1016/s0022-3476(96)70294-9 f w moler c m steinhart g l stidham premature respiratory insufficiency / drug therapy* respiratory insufficiency / mortality respiratory insufficiency / therapy respiratory insufficiency / virology