Sinonasal symptoms
anterior rhinorrhea, rhinorrhea, tearing, pain, nasal congestion, headache
Sinonasal symptoms including nasal congestion, anterior rhinorrhea, posterior rhinorrhea, sneezing, tearing, facial pain or pressure, headache were assessed and graded from 0-3 (0=no problems, 1=mild problems, 2=moderate problems, 3=severe problems). The sense of smell was graded from 0-2 (0=normal, 1=mild problems, 2=not possible).