Kirichenko, Tatiana V <br/><br/>
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.  [electronic resource] 

 -  Biology  Apr 2020 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>2079-7737 
<br/><br/><label>Standard No.: </label>10.3390/biology9040083  doi