000 00339nam a2200133Ia 4500
008 251112s9999||||xx |||||||||||||| ||und||
040 _aCNCLSA
100 _aAlferd Somers
_94170
245 0 _aAmerican Journal Of Epidemiology
260 _c1995
_bThe Johns Hopkins University
_aUSa
300 _aP.1-384
300 _bV.141
942 _cJRBV
999 _c26172
_d26172