LTF and COVID-19: The important role of lactoferrin is to calm down the cytokine storm, which is the main cause of the rapid course of COVID-19 [45,46,47,48,49,50,57,79,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133].