Fig. 4. Phenotypic clustering of COVID-19 patients.

A Dendrogram of COVID-19 patients’ clinical phenotypes by hierarchical clustering of organ/system involvement. B Drawing of the above reported graph helping interpretation and simplification in the main branch of the tree. A¹ severe multisystemic with either thromboembolic; A² severe multisystemic with pancreatic variant; B¹ cytokine storm with moderate liver involvement; B² cytokine storm with severe liver involvement; C¹ mild with hyposmia; C² mild without hyposmia; D¹ moderate without liver damage; D² moderate with liver damage; E¹ heart with liver damage; E² heart without liver damage.