000
00304nam a2200121Ia 4500
008
251112s9999||||xx |||||||||||||| ||und||
022
_a
0028-4793
040
_a
CNCLSA
245
0
_a
New England Journal Of Medicine
260
_c
2000
_b
Massachuetts Medical Society
_a
USA
300
_b
V.343
942
_c
JRBV
999
_c
23249
_d
23249