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[DOI] [PubMed] [Google Scholar] 108.Ilic S., Drmic D., Franjic S., Kolenc D., Coric M., Brcic L., Klicek R., Radic B., Sever M., Djuzel V., et al

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27 The major limitations of this study are the lack of verifiable diagnoses reported by respondents, lack of objective symptom improvement, and low survey response rate, all of which were anticipated weaknesses given the study design