Answer:
Hemovigilance is the set of surveillance procedures covering the entire blood transfusion chain, from the donation and processing of blood and its components, through to their provision and transfusion to patients, and including their follow-up.
Explanation:
 
        
             
        
        
        
Well because it is the amount that the nutritional facts are given on, say you buy a box of donuts, and it says 80 calories that could be for a 2 donuts for 1 for the whole package but knowing the serving size you can base how much you eat etc
        
                    
             
        
        
        
Answer – ICD-10 Code Z21 As stipulated in the diagnosis
classification system created by Center for Disease Control and Prevention (CDC),
ICD-10 Code Z21 is to be applied to indicate asymptomatic positive human
immunodeficiency virus [HIV] infection status. That is, when a patient with no history
or complaint of symptoms tests positive for HIV.
 
        
             
        
        
        
To prevent allergic reactions.
        
                    
             
        
        
        
I think tap dancing is an aerobic exercise.