title: Unanswered questions.
authors.forename: Melanie
authors.initials: M
authors.lastname: Eßer
authors.forename: Rüdiger
authors.initials: R
authors.lastname: von Kries
authors.forename: Ulrich
authors.initials: U
authors.lastname: Mansmann
mesh_terms: D019090:Case Management / Q000592:standards* / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007226:Infant Mortality; D007235:Infant, Premature, Diseases / Q000401:mortality*; D015931:Intensive Care, Neonatal / Q000592:standards* / Q000706:statistics & numerical data*; D008297:Male; D016016:Proportional Hazards Models