[Methodological approaches to study sub-optimal care in children].
Launay
E
E
Clinique Médicale et Service d'Urgences Pédiatriques, Hôpital Mère-Enfant, 44000 Nantes, France.
Gras-le Guen
C
C
Martinot
A
A
Bouvier-Colle
M-H
MH
Chalumeau
M
M
D002648:Child; D006801:Humans; D010372:Pediatrics / Q000592:standards*; D012308:Risk Management