* neonates/infants with a corrected gestational age of \<= 44 weeks * if the attending clinician believes that there is a specific contra-indication to one of the active drug treatment arms or that the patient should definitely be receiving one of the active drug treatment arms, then that arm will not be available for randomisation for that patient.

* neonates/infants with a corrected gestational age of \<= 44 weeks * if the attending clinician believes that there is a specific contra-indication to one of the active drug treatment arms or that the patient should definitely be receiving one of the active drug treatment arms, then that arm will not be available for randomisation for that patient.

- neonates/infants with a corrected gestational age of <= 44 weeks - if the attending clinician believes that there is a specific contra-indication to one of the active drug treatment arms or that the patient should definitely be receiving one of the active drug treatment arms, then that arm will not be available for randomisation for that patient.

- neonates/infants with a corrected gestational age of <= 44 weeks - if the attending clinician believes that there is a specific contra-indication to one of the active drug treatment arms or that the patient should definitely be receiving one of the active drug treatment arms, then that arm will not be available for randomisation for that patient.