| 000 | 00342nam a2200133Ia 4500 | ||
|---|---|---|---|
| 008 | 251112s9999||||xx |||||||||||||| ||und|| | ||
| 040 | _aCNCLSA | ||
| 100 |
_aAlferd Somers _94172 |
||
| 245 | 0 | _aAmerican Journal Of Epidemiology | |
| 260 |
_c1991 _bThe Johns Hopkins University _aUSa |
||
| 300 | _aP.839-1318 | ||
| 300 | _bV.133 | ||
| 942 | _cJRBV | ||
| 999 |
_c26174 _d26174 |
||