| 000 | 00330cam a2200121 4500 | ||
|---|---|---|---|
| 001 | 00284793 | ||
| 008 | 040806t xxu||||| |||| 00| 0 eng d | ||
| 020 | _aNEJM | ||
| 022 | _a00284793 | ||
| 110 | _aMASSACHUSETTS MEDICAL SOCIETY | ||
| 245 | 0 | _aNew England Journal of Medicine | |
| 260 |
_aMassachusetts _bMassachusetts Medical Society |
||
| 999 |
_c28601 _d28601 |
||