Martha S. Linet etal. It seemed unlikely that chance alone would have been at play when so few cases occurred in those residences with the lowest category of exposure. The median residential EMF has been recognized by law. Judge Galvin also noted that high fields may come from individual appliances. The greatest offenders were hair dryers and electric shavers.
Few children sleep within a meter of blowing hair dryers or buzzing shavers.
The grounding system includes water pipes, television cables, gas pipelines, and other metallic paths that are grounded. Many children are exposed to such fields. Parents can turn off electric household appliances. They can not turn off EMFs from the grounding system. Here is the program in case you would like to have your computer confirm these odds.