.
:
, .
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.
:
, BARRON, 11 1984 ;
. , New England Journal of Medicine, 20 1984 ;
: ,
Science in Medicine Simplified, 1, 1 1990
. , , .
1990
. ,
/ 3267
- , , 22043
!
24 , , , . .
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- , 22043,
703 448 7524
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