Dear Editor;<br /><br />I am happy to ask you to edit my revised paper again. Actually. this manuscript is 2nd revised version.<br />One referee strongly asked us to correct grammatical errors as follows:<br /><br />"<strong>I found this manuscript contains numerous grammatical errors that might &nbsp;obscure the message of this paper. The authors should correct them."<br /><br /><br /></strong>Could you have this manuscript thoroughly checked, particularly, grammatical errors?<br /><br />Your prompt and awesome editing service is always appreciated.&nbsp;<br /><br />I am looking forward to receiving quite better edited version soon.<br /><br /><br />Best wishes,<br /><br /><br />Sung C. Jun