text: Yo, check it out, here's the lowdown
  A study on childhood cancer, let me throw it down
  France and the UK, 4,400 strong
  Followed up for years, see what went wrong
  
  They got treated for cancers, various types
  Radiotherapy and chemo, that was the hype
  But they wanted to know, were brain tumors at stake?
  After the first cancer, what risks did they take?
  
  The findings came in, it's time to reveal
  Elevated risks, yo, it's a big deal
  If they had CNS tumors, the risk was high
  Two-sided p-value, oh my, it don't lie (p = 0.0002)
  
  Neurofibromatosis, another risk factor
  Two-sided p-value, yo, it was a cracker (p = 0.001)
  But the radiation exposure, that was key
  Brain tumor risk went up, can't you see? (p = 0.003)
  
  Ionising radiation, causing a fuss
  Benign and unspecified tumors, it had a plus
  The risk was higher than malignant ones, no doubt
  Two-sided p-value, it's what it's about (p< or =0.05)
  
  Malignant tumors, no change with the dose
  Two-sided p-value, it didn't come close (p > 0.2)
  Alkylating agent dose, not much to say
  No strong associations, it didn't sway
  
  But hold up, there's one thing to mention
  A weak result, gotta pay attention
  Bleomycin and chloraminophen, the compounds they found
  Seemed to have a slight risk, just one case, profound
  
  So there you have it, the study's rap
  Childhood cancer and risks, that's a wrap
  Brain tumors and treatments, they're intertwined
  Knowledge is power, gotta keep it in mind!