title: [Clinical symptoms of the initial stage of rheumatoid arthritis in children aged up to 15 years].
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001171:Arthritis, Juvenile / Q000175:diagnosis*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D013997:Time Factors
vernacular_title: Obraz kliniczny poczatku reumatoidalnego zapalenia stawów u dzieci do lat 15.