Electromagnetic Fields Exposure from Power Lines and Human Fertility

{
  "study_type": "other",
  "exposure": {
    "band": "ELF",
    "source": "power lines",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "human fertility"
  ],
  "main_findings": null,
  "effect_direction": "unclear",
  "limitations": [
    "Only citation information provided; no abstract content describing methods or results."
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.42,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic fields",
    "power lines",
    "ELF",
    "fertility",
    "human fertility"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.2,
      "reason": "Exposure source is power lines; could relate to occupational or residential proximity, but population/context not specified in provided text."
    }
  ]
}