What,if anything,is wrong in this control chart? Explain briefly. 
Definitions:
Prevalence
The proportion of a population found to have a condition at a specific time.
Lithium
A chemical element used as a medication to treat and prevent mania, bipolar disorder, and other mood disorders.
Mood Disorders
Psychological disorders characterized by the elevation or lowering of a person's mood, such as depression or bipolar disorder.
Side Effect
An unintended and usually adverse effect produced by a medication or treatment that occurs in addition to the desired therapeutic effect.
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