However, there are certain groups of people it affects more commonly. (bestliferates.org)
Yet controversy persists over exactly what causes it, how many people it affects (some studies claim as many as 1 in 20) and how best to treat it. (newscientist.com)
It took me until years into the profession to find law books with pictures, and color and to see the law and the real people it affected. (slaw.ca)