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Clinical Effectiveness of a Combination of Black Elder Berries, Violet Herb, and Calendula Flowers in Chronic Obstructive Pulmonary Disease: The Results of a Double-Blinded Placebo-Controlled Study.
Kirichenko TV, Sobenin IA, Markina YV, Gerasimova EV, Grechko AV, Kashirskikh DA, Romanenko EB, Wu WK, Orekhov AN. Kirichenko TV, et al. Among authors: romanenko eb. Biology (Basel). 2020 Apr 22;9(4):83. doi: 10.3390/biology9040083. Biology (Basel). 2020. PMID: 32331341 Free PMC article.