(The University of Texas) , , , , , .
. , .
2008 2014 367 . , .
(Tasnee Chonmaitree) . , .
, : 9% , 1980 23%.
, , . , .
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(The University of Texas) , , , , , .
. , .
2008 2014 367 . , .
(Tasnee Chonmaitree) . , .
, : 9% , 1980 23%.
, , . , .