[Nosologic problems of essential polycythemia in children. Apropos of a case].
D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D006801:Humans; D008297:Male; D011086:Polycythemia / Q000097:blood / Q000145:classification*
Problèmes nosologiques de la polyglobulie essentielle de l'enfant. A propos d'un cas