Results: There were 719 patients in the study group, the mean age was 12.4 ± 5.7 years, the majority of patients was male (74.1%).
Kết quả: Có 719 bệnh nhân trong nhóm nghiên cứu, tuổi trung bình là 12,4 ± 5,7 tuổi, tỉ lệ nam giới 74,1%.