Prion, Viral, Bacterial and Fungal Pathogens of Humans [VV210]; Non-communicable Human Diseases and Injuries [VV600]; human diseases; coronavirus disease 2019; viral diseases; cohort studies; biochemical markers; brain; cardiac output; lungs; renal function; thrombosis; man; Severe acute respiratory syndrome coronavirus 2; Hamburg; Germany; Homo; Hominidae; primates; mammals; vertebrates; Chordata; animals; eukaryotes; Severe acute respiratory syndrome-related coronavirus; Betacoronavirus; Coronavirinae; Coronaviridae; Nidovirales; positive-sense ssRNA Viruses; ssRNA Viruses; RNA Viruses; viruses; European Union Countries; high income countries; OECD Countries; very high Human Development Index countries; Western Europe; Europe; SARS-CoV-2; viral infections; biomarkers; cerebrum; heart output; kidney function; blood clots