Tacrolimus prolonged release

Study to Compare the Pharmacokinetics of Tacrolimus in Stable Pediatric Allograft Recipients Converted From Prograf® to Advagraf®

A Study to Compare How the Body Absorbs and Processes Two Different Formulations of the Anti-rejection Medication Tacrolimus (Advagraf® or Prograf®) in Children Receiving an Organ Transplant, and How Safe and Effective They Are Over a Longer Period of Time