This is called peer review. A peer is a person of at least equal standing in the area of intellect to the person being reviewed.
        
             
        
        
        
South America has the largest grassland of Earth.<span><span><span /></span></span>
        
                    
             
        
        
        
Cystic fibrosis (CF) affects both males and females and people from
all racial and ethnic groups. However, the disease is most common among
Caucasians of Northern European descent.
CF also is common among Latinos and American Indians, especially the
Pueblo and Zuni. The disease is less common among African Americans and
Asian Americans.