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Additive effect of 23-valent pneumococcal polysaccharide vaccine and influenza vaccine on acute exacerbation in older patients with chronic lung disease
DU Jian-zong, LIU Xiao-li, ZHAO Tian, GU Liang, QIN Guang-yue
Chinese Journal of Clinical Pharmacology and Therapeutics . 2012, (6): 700 -702 .