000			00342nam a2200133Ia 4500
008			251112s9999||||xx |||||||||||||| ||und||
040			_aCNCLSA
100			_aAlferd Somers _94173
245		0	_aAmerican Journal Of Epidemiology
260			_c1991 _bThe Johns Hopkins University _aUSa
300			_aP.923-1516
300			_bV.134
942			_cJRBV
999			_c26175 _d26175