Impaired Vascular Function in Sarcoidosis Patients -- Effectiveness of Bronchofiberoscopy in Diagnosis of Lung Lesions -- Hospital Morbidity Database for Epidemiological Studies on Churg-Strauss Syndrome -- Public Perception of the Risks Associated with Infectious Diseases in Poland: Ebola and Influenza and Their Impact on the Attitude to Vaccination -- The Sentinel System as the Main Influenza Surveillance Tool -- The activity of influenza and influenza-like viruses in individuals aged over 14 in the 2015/16 influenza season in Poland -- Clinical utility of Berlin Questionnaire in Comparison to Polysomnography in Patients with Obstructive Sleep Apnea -- Isolated Hearing Impairment Caused by SPATA5 Mutations in a Family with Variable Phenotypic Expression -- Stress Response, Brain Noradrenergic System and Cognition -- Small Airway Obstruction in Chronic Obstructive Pulmonary Disease: Potential Parameters for Early Detection.-index. .