Soluble Urokinase Plasminogen Activator Receptor: An Indicator of Pneumonia Severity in Children -- Detection of Respiratory Tract Pathogens with Molecular Biology Methods -- Classical against Molecular-Genetic Methods for Susceptibility Testing of Antituberculotics -- Does Customer Information Fulfill MEDDEV Criteria in Cases of Product Problems of In Vitro Diagnostics for Infection Testing? -- Sodium and Copeptin Levels in Children with Community Acquired Pneumonia -- Etiological Factors Causing Lower Respiratory Tract Infections Isolated from Hospitalized Patients -- Antibiotic Consumption Pattern in the Neonatal Special Care Unit Before and After Implementation of the Hospital's Antibiotic Policy -- Respiratory Tract Infections in Children in Primary Healthcare in Poland -- Impact of Updated European Consensus Guidelines on the Management of Neonatal Respiratory Distress Syndrome on Clinical Outcome of Preterm Infants.