{
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     "endpoint_directions": {
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      "liver": "BENEFIT"
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     "risk_of_bias": "INSUFFICIENT_INFORMATION",
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   ],
   "quantitative_observations": [],
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    "bound": 3
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   ],
   "quantitative_observations": [
    {
     "observation_id": "QOB-bb19575974605f",
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     "original_value": null,
     "original_representation": "p < 0.05",
     "original_unit": null,
     "normalized_value": null,
     "normalized_unit": null,
     "endpoint": null,
     "extraction_state": "FAILED_EXTRACTION",
     "validation_state": "FAILED_VALIDATION",
     "transformation": "NONE",
     "record_id": "epmc:38718889"
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   ],
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   },
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    },
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    "observations_pooled": 0
   }
  }
 ]
}