The symptom assessment of the 79 exposed and 27 unexposed subjects comprised interviews before the shift began and then at regular hourly intervals for the next six hours of the shift, four days in a row.
Procjena simptoma kod 79 izloženih i 27 neizloženih osoba obuhvaćalo je intervjue prije početka smjene, te u regularnim intervalima svakih 6 sati, 4 dana uzastopce.