ACE2 and COVID-19: The receptor for COVID‐19, similarly to other coronaviruses, has a high affinity for human angiotensin‐converting enzyme‐2 (ACE‐2), expressed in type 1 and 2 alveolar epithelial cell and endothelium, but also in such organs as the heart, endothelium, pancreas and the intestinal epithelium.27