write about thyroid nodules prevalence causes and risk factor , diagnosis and tr

write about thyroid nodules prevalence causes and risk factor , diagnosis and treatment in diagnosis write about fine needle aspiration technique in wide range
write all part with his reference in separate part and all information should be found in references because I will review after this collect all parts in one file ( introduction) in the following arrangement prevlance , causes and risk factor , diagnosis,and treatment .
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I wrote part of prevlance Continue to remain a part