Brief Articles
Copyright ©2009 The WJG Press and Baishideng.
World J Gastroenterol. Jul 14, 2009; 15(26): 3261-3268
Published online Jul 14, 2009. doi: 10.3748/wjg.15.3261
Figure 1
Figure 1 Percentage of subjects with specific symptoms of birch pollen allergy among allergic children. The gray bar represents the alder pollen season and the black bar the birch pollen season in Turku (Finland) during the study period (> 100 pollen/m3).