When we write things down it's important to keep things nice and clear, so it's easy to read. Sentences help us give an order, ask a question, state a fact or express an emotion or idea. Words are the ...
Correspondence to: Dr S R Jones, Emergency Department, Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK; steve.r.jones{at}bigfoot.com Understand power and sample size estimation.
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