text: Yo, check it out, here's the rap rendition
  Of a medical study, let me grab your attention
  525 patients, ages 15 to 44
  With acute lymphoblastic leukemia, let's explore
  
  They followed the German study protocol, you see
  Treating these patients, just wait and hear the key
  41 of 'em got bone marrow transplants, HLA-identical
  Siblings hookin' 'em up, it's quite incredible
  
  First remission was the time, when it went down
  Comparin' disease-free survival, let's break the sound
  The other patients, they were meant for chemo
  But who came out on top? Let's see how it goes
  
  After adjustin' for biases, they got the facts straight
  Prognostic profiles emerged, it's time to celebrate
  They estimated the impact of time-to-transplant bias
  Comparin' similar patients, no need to be biased
  
  Both groups had comparable characteristics, that's true
  And the treatment outcome? It's in the review
  After statistical adjustment, they found the scoop
  The three-year probability of survival, let me loop
  
  It was 34%, with a confidence interval so wide
  From 16% to 52%, let those numbers collide
  In both groups, the disease-free survival was the same
  Even after adjustin', the results remain unchanged, ain't that insane?