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| 001 | 016598 | ||
| 005 | 20160923115306.0 | ||
| 008 | 020422c1990####xxu###p#############eng#d | ||
| 022 | _a0028-4793 | ||
| 040 | _aAR-beUNQ | ||
| 099 | _aP-US-NEW2 | ||
| 110 | 2 | _aMassachusetts Medical Society | |
| 245 | 0 | 0 |
_aThe New England Journal of Medicine _cMassachusetts Medical Society. |
| 260 |
_aBoston : _bMassachusetts Medical Society, |
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| 300 | _av. | ||
| 310 | _asemanal | ||
| 650 | 7 |
_aMedicina _2Spines |
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| 650 | 7 |
_aInvestigación _2Spines |
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| 929 | _j31943 | ||
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