000 00306nam a2200121Ia 4500
008 251112s9999||||xx |||||||||||||| ||und||
040 _aCNCLSA
245 4 _aThe New England Journal Of Medicine
260 _c1997
_bMassachussets Medical Society
_aUk
300 _aP.1-948
300 _bV.337
942 _cJRBV
999 _c25574
_d25574