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Valerieva A, Popov TA, Staevska M, Kralimarkova T, Petkova E, Valerieva E, Mustakov T, Lazarova T, Dimitrov V, Church MK.Valerieva A, et al. Among authors: popov ta.Allergy Asthma Proc. 2015 Nov-Dec;36(6):e134-9. doi: 10.2500/aap.2015.36.3879. Epub 2015 Jun 29.Allergy Asthma Proc. 2015.PMID: 26133030Clinical Trial.
Popov TA, Shenkada MS, Tzoncheva AV, Pravtchanska MP, Mustakov TB, Dimitrov VD.Popov TA, et al.World Allergy Organ J. 2008 May;1(5):74-8. doi: 10.1097/WOX.0b013e3181752d02.World Allergy Organ J. 2008.PMID: 23282322Free PMC article.