The authors have unfortunately discovered that the originally published version of this article contains errors. These errors lead to minor changes of the paper, but need to be corrected.
In this corrigendum, we supply the corrected data in Results and Discussion.
These corrections do not alter the study’s findings of significance or overall interpretation of the study results. The authors regret for any inconvenience caused.
RESULTS
In the Results the following sentence is changed:
Original sentence
Concomitant reactions to 2 types of propolis were most frequent to those of Lithuanian and Swedish origin; 16 out of 26 (61%) and 16 out of 26 (61%) patients, respectively.
Corrected sentence and added sentence
Concomitant reactions to 2 types of propolis were most frequent to those of Lithuanian and Swedish origin; 16 out of 26 (61%) and 18 out of 26 (89%) patients, respectively.
DISCUSSION
In the Discussion the following sentence is changed:
Original sentence
Although small differences in frequencies were found, there were no statistically significant differences in the number of positive reactions between the 4 different types of propolis in any of the 3 countries, individually or together.
Corrected sentence and added sentence
Although small differences in frequencies were found, there were no statistically significant differences in the number of positive reactions between the 4 different types of propolis in any of the 3 countries, individually or together with one exception. Positive reactions to propolis from Lithuania was significantly more frequent (p = 0.039) than propolis originating from Sweden.