text: Yo, check it out, we conducted two case-control studies,
  Brain tumors in the timeframe, let me give you the deets.
  From January '97 to June '00, and then again,
  From July '00 to December '03, we went in.
  
  We included living cases and controls, aged 20 to 80,
  But we didn't stop there, we dug deeper, homie.
  We studied deceased cases with malignant brain tumors,
  Comparing them to deceased controls, no humor.
  
  For glioma, the results were quite alarming,
  Ipsilateral mobile phone use had the odds ratio charming.
  It was 2.9, with a confidence interval of 1.8 to 4.7,
  In the latency group of more than 10 years, for real.
  
  But wait, there's more, let me drop some knowledge,
  Cordless phone use also had a scary edge.
  The odds ratio was 3.8, with a CI of 1.8 to 8.1,
  Wireless phones ain't no joke, son.
  
  Cumulative use per 100 hours and per year,
  Showed a statistically significant increase in fear.
  The odds ratio climbed higher, no need to guess,
  For high-grade glioma, it was a mess.
  
  Ipsilateral mobile phone use had an OR of 3.9,
  With a CI of 2.3 to 6.6, it blew our minds.
  Cordless phone use was even worse in its glory,
  With an OR of 5.5, CI of 2.3 to 13, that's the story.
  
  Heredity played a role, we gotta mention,
  For brain tumors, the OR was 3.4, no tension.
  But there was no interaction with wireless phone use,
  It's a separate factor, don't misconstrue.
  
  X-ray investigations of the head showed something profound,
  An overall OR of 1.3, CI of 1.1 to 1.7, profound.
  No interaction with wireless phones or heredity,
  Glioma risk increased, that's the reality.
  
  So, to wrap it up, mobile and cordless phones,
  Bring a risk of glioma, let it sink in your bones.
  Ipsilateral use, latency over a decade,
  Cumulative use in hours, it's a price we paid.
  
  And listen up, the risk is highest for the young,
  Those under 20 years, where it all begun.
  So, take caution, my friends, when using wireless gear,
  Protect your dome, keep the risks clear.