Burden of Recurrent Respiratory Tract Infections in Children: A Prospective Cohort Study.

Added 1302 days ago (01.08.2016)

Authors: Toivonen L, Karppinen S, Schuez-Havupalo L, Teros-Jaakkola T, Vuononvirta J, Mertsola J, He Q, Waris M, Peltola V