National Center for Biotechnology Information NCBI NLM MEDLINE humans pubmed abstract nih national institutes of health national library of medicine treatment outcome research support non-u.s. gov't adult female male N.I.H. Extramural aged middle aged Retrospective Studies acute disease confidence intervals intensive care units intubation thrombocytopenia / mortality intratracheal arun venkatesan encephalitis / therapy* pmid:23892708 pmc3908458 doi:10.1212/wnl.0b013e3182a2cc6d kiran t thakur melissa motta autoimmune diseases / mortality brain edema / mortality encephalitis / mortality status epilepticus / mortality status epilepticus / therapy*