references
TRANSCRIPT
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References
http://www.medicalnewstoday.com/articles/248911.php
http://www.medicalnewstoday.com/releases/248881.php
http://www.medicalnewstoday.com/articles/249191.php
http://jxb.oxfordjournals.org/content/early/2012/06/22/jxb.ers124.a
bstract
http://www.medicalnewstoday.com/articles/249012.php