N. Sprem et S. Branica, EFFECTS OF SULFUR-DIOXIDE AND SMOKE ON THE INCIDENCE OF LARYNGOTRACHEITIS (CROUP), International journal of pediatric otorhinolaryngology, 26(3), 1993, pp. 245-250
During the 1981-1990 period, 652 children, 70% boys and 30% girls, wer
e hospitalized at the Zagreb University ENT Department for laryngotrac
heitis (croup). Most of the children were hospitalized at the age of 2
, and 90% of all children were under the age of 7. The highest number
of cases of laryngotracheitis were admitted during autumn, especially
in October, and the lowest in July. No correlation was found between t
he mean and peak monthly values of sulfur dioxide and smoke in the air
in Zagreb and the number of children hospitalized for laryngotracheit
is.