Gayova, I. M. (2015). Pathogenetic Bases of Actovegin’s and Sambucus Nigra’s Administration at the Complex Treatment of the Elderly Patients with Non-obstructive Chronic Bronchitis and the Concomitant Multisystemic Diseases. Galician Medical Journal, 22(2), 80-82. Retrieved from https://ifnmujournal.com/gmj/article/view/305