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Try:-The doctor is concerned about possible atrophy of the shoulder muscles.

13 years ago. Rating: 2
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Understanding compound sentences is the key. Read here > http://www.ehow.com/how_2213951_write-compound-sentences.html 

Once you understand the sentence structure and the meaning of atrophy, you will be able to write your own sentence. 

13 years ago. Rating: 0
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