Infant Child 61 Adolescent 19 Children 18 Enfants 16 Pediatrics 16 Diseases 13 Infants 13 Nourrissons 12 children (people by age group) 11 infants 10 Age Groups 8 Persons 8 Humans 7 Neoplasms 7 Immune System Diseases 6 Pediatric Medicine 6 Pédiatrie 6 Zeitschrift 6 Child psychiatry 5 HIV Infections 5 Hematologic Diseases 5 Immunologic Deficiency Syndromes 5 Lentivirus Infections 5 Mental Disorders 5 RNA Virus Infections 5 Retroviridae Infections 5 Sexually Transmitted Diseases 5 Sexually Transmitted Diseases, Viral 5 Son 5