Treatment process and patient events. (*) Prolonged chemotherapy regimen defined as duration at least 2 weeks greater than expected. Prolonged surgical phase was defined as greater than the 21 days, per International Society of Pediatric Oncology recommendations. (†) Did not have preoperative chemotherapy at Butaro Cancer Center of Excellence. Some patients had preoperative chemotherapy but not standardized. IQR, interquartile range; LTFU, loss to follow-up; Post-Op, postoperative; Pre-Op, preoperative.