Adolescent 1 Alanine Transaminase 1 Article 1 Biomarkers 1 Body Mass Index Child 1 Female 1 Ferritins 1 Humans 1 Logistic Models 1 Male 1 Non-alcoholic Fatty Liver Disease 1 Pediatric Obesity 1 adolescent 1 alanine aminotransferase 1 alanine aminotransferase blood level 1 biological marker 1 blood 1 body mass 1 child 1 childhood obesity 1 children 1 complication 1 controlled study 1 disease association 1 female 1 ferritin 1 ferritin blood level 1 human 1 major clinical study 1